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Eliminate Sustain Pedal Thump

  • 1.  Eliminate Sustain Pedal Thump

    Posted 08-25-2015 12:26

    Hello all,

    I am a live sound engineer and recording artist, and I need to figure out a way to eliminate the thumping sound which gets picked up by microphones whenever the sustain pedal on a grand piano is released quickly.  The problem is that all 88 dampers come crashing down on the strings to mute them, but in doing so cause a "thump" both in the strings themselves (which is picked up by devices such as a Helpinstill style microphone) and also in the body of the piano itself (which is picked up by conventional mics, especially when placed up close).  Is there some way, or some device, which can slow the dampers down just before they land on the strings, much like a jumper pulling a parachute before landing?  Something that would not change the characteristic of the pedal action too much as to disturb the player and the overall sound?  

    I have also considered a device which temporarily mutes the audio from the microphone at the moment of the pedal release (not the whole signal, but only the low-frequency range where the thump mainly resides), but a direct mechanical fix is more preferable as the piano sound can remain unprocessed after the microphone.  

    Thanks!!



    ------------------------------
    Devin Sheets
    Iowa City IA
    503-393-0875
    ------------------------------



  • 2.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 12:41

    You might need softer damper felt. Also timing the dampers to lift/descend unevenly, bass-treble, will reduce the noise. Contact a local technician.

    ------------------------------
    Regards,

    Jon Page



  • 3.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 12:45

    Hi Jon, thanks for your reply!  My problem is that I travel constantly, and I'm always working with different pianos... I need a solution that can quickly be applied to any grand piano in about five minutes or less, and quickly removed after the performance/recording.  Any ideas?  Anybody I can email?

    ------------------------------
    Devin Sheets
    Iowa City IA
    503-393-0875
    ------------------------------




  • 4.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 12:59
    Hi, Devin,

    On 8/25/2015 9:45 AM, Devin Sheets via Piano Technicians Guild wrote:
    > Please do not forward this message due to Auto Login.
    >
    >
    > Hi Jon, thanks for your reply! My problem is that I travel constantly, and I'm always working with different pianos... I need a solution that can quickly be applied to any grand piano in about five minutes or less, and quickly removed after the performance/recording. Any ideas? Anybody I can email?

    More information is always good.

    In this case, given the above additional data, your best bet is probably
    to go with the gate you mentioned in your first EM. That way, you'll
    have whatever degree of control is possible given the circumstances
    specific to where you and and with what piano you are working.

    Also, please be aware that much pedal/trapwork noise is also generated
    by the player, themselves; and is beyond the reasonable control of the
    piano or technician. Someone who consistently either slams a pedal down
    or releases it abruptly will have more noticeable noise than someone who
    doesn't. For an example of the former, listen carefully to recordings
    of Rudolf Serkin. Once you filter out his singing, you'll hear very
    abrupt/violent releases on the sustain/damper pedal.

    Feel free to contact me off list.

    Kind regards.

    Horace Greeley


    >
    > ------------------------------
    > Devin Sheets
    > Iowa City IA
    > 503-393-0875
    > ------------------------------
    >
    > -------------------------------------------
    > Original Message:
    > Sent: 08-25-2015 12:41
    > From: Jon Page
    > Subject: Eliminate Sustain Pedal Thump
    >
    >
    >
    >
    > You might need softer damper felt. Also timing the dampers to lift/descend unevenly, bass-treble, will reduce the noise. Contact a local technician.
    >
    > ------------------------------
    > Regards,
    >
    > Jon Page
    >
    >
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    ------Original Message------

    Hi Jon, thanks for your reply!  My problem is that I travel constantly, and I'm always working with different pianos... I need a solution that can quickly be applied to any grand piano in about five minutes or less, and quickly removed after the performance/recording.  Any ideas?  Anybody I can email?

    ------------------------------
    Devin Sheets
    Iowa City IA
    503-393-0875
    ------------------------------




  • 5.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 13:09
    No such thing exists that I'm aware of. An adjustable progressive dash
    pot of sorts could be made to work after a fashion, but it wouldn't be a
    five minute install and calibration and I'd anticipate some resistance
    to you screwing it to the underside of the local pianos.

    Sorry, I don't have an answer. Either travel with your own piano, or let
    up on the pedal more carefully. You don't have a lot of realistic options.
    Ron N

    ------Original Message------

    Hi Jon, thanks for your reply!  My problem is that I travel constantly, and I'm always working with different pianos... I need a solution that can quickly be applied to any grand piano in about five minutes or less, and quickly removed after the performance/recording.  Any ideas?  Anybody I can email?

    ------------------------------
    Devin Sheets
    Iowa City IA
    503-393-0875
    ------------------------------




  • 6.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 13:21

    I guess my thought would be some kind of device which clamps to the metal bar, or is placed between the wooden lever and the underside of the piano?  Even if I have to make this device myself, what do y'all think is the best way to go about it?

    ------------------------------
    Devin Sheets
    Iowa City IA
    503-393-0875
    ------------------------------



  • 7.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-25-2015 13:45

    David

    As others have indicated, the problem is not always the dampers themselves. The problem in most cases is the player. One way you could eliminate the thumping is to tell the piano player the thumping is being heard on the recording. Letting the player be aware of the noise might make the player change his/her damping technique.

    ------------------------------
    Willem "Wim" Blees, RPT
    Mililani, HI 96789
    ------------------------------




  • 8.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-25-2015 13:51
    Devin:

    Your best solution would be to contact the venue where you'll be recording, inform them of the problem that you often encounter, and then insist they hire a qualified technician to check out the pedal and make repairs/regulation as needed.  Too often venue managers/technicians have no clue when it comes to the concert-level service requirements of fine pianos.  They are either ignorant of what needs to be done, or they don't want to spend the money.  The problem becomes critical and embarrassing when the pianist refuses to perform, or the piano gets a bad reputation by the arts community. 

    If you refuse to record because of noise from poor damper regulation, maybe they'll do something that should have been done anyway.  Or if you have a written contract that requires certain things to be done, then they have no choice.  For example, George Winston has a very detailed contract that includes specific piano requirements. You could be the reason that some venues actually do something to improve their pianos.

    So, just make sure a competent piano technician is hired to do what needs to be done and then you'll be fine. And piano technicians will thank you for the work and for standing up for high standards. And you'll be making happy pianos out there!

    Richard West


    ------Original Message------

    I guess my thought would be some kind of device which clamps to the metal bar, or is placed between the wooden lever and the underside of the piano?  Even if I have to make this device myself, what do y'all think is the best way to go about it?

    ------------------------------
    Devin Sheets
    Iowa City IA
    503-393-0875
    ------------------------------



  • 9.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-25-2015 14:08

    SOME of the release sound you are hearing may be coming from the felts (usually about 70 of them) returning to the strings, but some may also be coming from elsewhere in the pedal system.

    ------------------------------
    Alan Eder, RPT
    Herb Alpert School of Music
    California Institute of the Arts
    Valencia, CA
    661.904.6483
    ------------------------------




  • 10.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 14:21

    After some experimenting, the specific thump I need to eliminate is the one caused by the release of the dampers onto the strings at a quicker speed.  To be clear, the problem is not with the initial upwards movement, it is specifically when they all come down to rest, and unfortunately I do not usually have the liberty to ask players to alter their playing in any way - and even if I did, they would probably forget halfway through the performance and render the piano sound unusable.  Is there something a technician can do to eliminate this even when the pedal is released quickly?  I don't know hardly anything about what can be mechanically calibrated on the piano...

    Unfortunately, I can't operate on contracts in this manner (that would be nice!)... I get hired almost solely because I show up with creative ways to deliver even in the most arduous situations without a fuss.  I need some simple way to do this which doesn't involve the players, the clients, or any permanent alterations to the pianos (if for some reason, they want to change whatever back to the way it was before).



  • 11.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 14:41
    At last, enough information to define the situation.

    Hire yourself a piano technician with sufficient practical engineering
    and fabrication experience (not an engineer or machinist), to work with
    you and build you as close as he can get to what you want. Pay whatever
    hundreds, thousands, or tens of thousands the R&D ends up costing in
    time and materials, and patent it in hopes of selling more to recoup the
    initial investment. Yes, it's doable. Yamaha's player system has just
    such a device that works with the pedal solenoid, well covered by patents.
    Ron N

    ------Original Message------

    After some experimenting, the specific thump I need to eliminate is the one caused by the release of the dampers onto the strings at a quicker speed.  To be clear, the problem is not with the initial upwards movement, it is specifically when they all come down to rest, and unfortunately I do not usually have the liberty to ask players to alter their playing in any way - and even if I did, they would probably forget halfway through the performance and render the piano sound unusable.  Is there something a technician can do to eliminate this even when the pedal is released quickly?  I don't know hardly anything about what can be mechanically calibrated on the piano...

    Unfortunately, I can't operate on contracts in this manner (that would be nice!)... I get hired almost solely because I show up with creative ways to deliver even in the most arduous situations without a fuss.  I need some simple way to do this which doesn't involve the players, the clients, or any permanent alterations to the pianos (if for some reason, they want to change whatever back to the way it was before).



  • 12.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-26-2015 14:54

    So, maybe the first thing to do would be to look at the Yamaha system. ;-)

    ------------------------------
    Keith Akins
    Akins Pianocraft
    Menominee MI
    906-863-7387
    ------------------------------




  • 13.  RE: Eliminate Sustain Pedal Thump

    Posted 08-26-2015 14:57

    Keith, I don't know anything about player piano systems... do you happen to know how the Yamaha system works, and if it could be configured to solve this problem?



  • 14.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-25-2015 16:10

    Devin 

    as as the recording engineer you should be able to ask the player to do something about the mouse if it interferes with the recording, just as you could do something about other extraneous noices and sound that can be heard on the recording.  What do you if the bench creaks, or an AC makes too much noise, or any thing else. Damper thumping is a natural occurance with piano.  But the noise can be greatly reduced with proper pedaling 

    ------------------------------
    Willem "Wim" Blees, RPT
    Mililani, HI 96789
    ------------------------------




  • 15.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 14:22

    If the dampers are being lifted too high, they'll make more noise on the return. Ask the tuner to limit the damper rise with the pedal to where the key lifts the damper, this is simply done with a stop felt on the trapwork.
    ------------------------------
    Regards,

    Jon Page



  • 16.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 14:32

    Don't release it quickly!

    :-)

     



    ------Original Message------

    Hello all,

    I am a live sound engineer and recording artist, and I need to figure out a way to eliminate the thumping sound which gets picked up by microphones whenever the sustain pedal on a grand piano is released quickly.  The problem is that all 88 dampers come crashing down on the strings to mute them, but in doing so cause a "thump" both in the strings themselves (which is picked up by devices such as a Helpinstill style microphone) and also in the body of the piano itself (which is picked up by conventional mics, especially when placed up close).  Is there some way, or some device, which can slow the dampers down just before they land on the strings, much like a jumper pulling a parachute before landing?  Something that would not change the characteristic of the pedal action too much as to disturb the player and the overall sound?  

    I have also considered a device which temporarily mutes the audio from the microphone at the moment of the pedal release (not the whole signal, but only the low-frequency range where the thump mainly resides), but a direct mechanical fix is more preferable as the piano sound can remain unprocessed after the microphone.  

    Thanks!!



    ------------------------------
    Devin Sheets
    Iowa City IA
    503-393-0875
    ------------------------------



  • 17.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 14:43

    Ideally, the pedal shouldn't be released quickly, but I'm being paid to "just make things work" without asking anything of anybody, and I can't risk the player forgetting this technique in the middle of the show, or else I'll have to dump the piano mics or use an EQ on the mixer board to completely thin out the sound.

     



  • 18.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 14:45

    Do you think that the dampers might still make a thump even if their height is restricted?  It seems at first thought that almost any height sufficient to completely free the strings would result in a thump if there was a quick release, although a greater height means greater thump...  



  • 19.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-25-2015 16:28

    Devin,

    To me, Jon Page's idea seems to be the most practical -- limit the travel of the upward movement of the dampers. This could be somewhat challenging for a non-technician because limiting the travel too much could cause some dampers to continue to dampen while others are clearing. If you feel adventurous, obtain a wedge shape of hard hammer felt (scraps of felt left over by hammer makers) that you can wedge between the sustain lever and the bottom of the keybed. Adjust the wedging process to obtain the "goldilocks" position for proper minimum lift with complete sustain. You can then take the wedge felt with you after your job is done. It's a long shot, but might work.

    ------------------------------
    Roger Gable
    Gable Piano
    Everett WA
    425-252-5000
    ------------------------------




  • 20.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 16:48

    I tried pressing the sustain pedal on my grand at home just high enough to clear the strings, then releasing it quickly, and it still thumps too much.  I am using a close-mic technique that is very sensitive to the thump, so I'll need to find a way to essentially get rid of it completely.  I wonder if a player-piano solenoid or other device could be used to accomplish this?  Or some kind of spring or padding?  

     


  • 21.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-25-2015 17:02

    Devin, you are the sound engineer, so you need the make the choice that make you and your clients the happiest. That said, you may wish to consider using a recording technique that does not does not include putting the microphones so close to the piano. Grand pianos are manufactured to sound good to an audience some distance away, so many sound engineers choose to record pianos with that in mind.

    ------------------------------
    Peter Stevenson RPT
    P.S. Piano Service
    Prince George BC
    250-562-5358
    ps@pspianoservice.com
    ------------------------------




  • 22.  RE: Eliminate Sustain Pedal Thump

    Posted 08-25-2015 17:26

    This needs to be compatible with live sound, and so close mic technique is unavoidable.  My main application is live sound; recording is secondary (usually a live recording).  I really don't get to work with the musicians much, the gigs I do aren't the typical things where one gets a sound check and the musicians are aware of and willing to work within the confines of live sound reproduction.  I get paid to essentially be invisible, make no fuss, work with what I'm given and somehow get an incredible sound out of these pianos for live shows, especially in the low frequencies.  I'll get about five minutes to work with the piano, I'll get maybe ten minutes to sound check the artist, then showtime!  Not ideal, but that's how it is...



  • 23.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-25-2015 17:47

    I think Peter's advice is good.  Fixing the piano properly is the best option.  But if you can't get that done, then you have to analyze how you're doing your own work.  I worked for a university for many years and saw many different ways of miking a piano.  Mike placement is causing your problem, so try alternatives, even putting the mike under the piano.  It sounds like it's time to rethink your own methods, sometimes very hard to do.

    ------------------------------
    Richard West
    Oro Valley AZ
    520-395-0916
    440richard@gmail.com
    ------------------------------




  • 24.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-25-2015 17:55

    You seem to think there is an easy on/off switch to control the damper system. There isn't. A well prepared piano, worked on by a competent piano technician, most of the sound your concerned about can be eliminated. But since you can't talk with the performer, cannot make demands of the venue regarding the condition of the piano, there really isn't much else you can do.

    There are some sounds of a piano that are unavoidable, kind of like the fingers sliding on guitar strings.  For you the sound of thumping might seem like a distraction. To others, it's part of the sound of a piano.

    But I agree with Richard, perhaps you need to rethink your miking techniques. Short of that, unless someone complains, leave well enough along.

    ------------------------------
    Willem "Wim" Blees, RPT
    Mililani, HI 96789
    ------------------------------




  • 25.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-25-2015 21:42

    C-ducer?

    ------------------------------
    Paul Klaus

    ------------------------------




  • 26.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-25-2015 18:22

    Devin,

    Using you home piano as a baseline may distort your prospects of eliminating the noise on other pianos. They can be quite different -- brand name, age, etc. You may have encountered a long run with bad trapwork -- common with older pianos. Are you recording primarily on Steinway and Yamaha pianos? These pianos are generally not problem pianos.

    ------------------------------
    Roger Gable
    Gable Piano
    Everett WA
    425-252-5000
    ------------------------------




  • 27.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-25-2015 22:57

    There is no quick fix. There are ways to reduce the noise, but not to eliminate the possibility of noise. There is no way to take any unknown piano from noisy to noiseless in five minutes.

    Softer damper felt (replacing all the damper felt) will help - hours of work. Making very subtle adjustments to the damper heads so that they come down one side before the other helps - not as much time, but no guarantees that this will eliminate noise. I suppose you could conceivably design something on the order of a slowing devise, but it would interfere with the speed of damping, probably create "oink" (noise when a damper felt, somewhat hard, slowly approaches a string). 

    A well prepped piano will have minimum noise of this sort, but not zero. Prepping a piano to this kind of degree is usually a solid two to three day job, depending on original condition.

    Sounds to me like you need to change to an electronic piano <g>. 

    ------------------------------
    Fred Sturm
    University of New Mexico
    fssturm@unm.edu
    http://fredsturm.net
    http://www.artoftuning.com
    "We either make ourselves happy or miserable. The amount of work is the same." - Carlos Casteneda
    ------------------------------




  • 28.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-26-2015 09:01

    Mr. Sheets -

    You have received significant input on this project,  from members of this list as well as the Electronics list to whom you also posed the problem

    http://www.electro-tech-online.com/threads/1v-audio-burst-every-other-pushbutton.145250/

    Your persistence and dedication are commendable, but you seem to be working from a position of knowledge deficiency in both the piano mechanics and the electronic spheres.  It hasn't helped the contributors on either list that you've provided less than full information about the effort, such as the kind of music, who it is that is making these demands, why this particular problem hasn't arisen before, how you still seem to be employed in this effort if you've yet to solve it, and so on.  Why not provide some sound samples, so that we might move from the purely hypothetical?

    And, to be clear, you seem to be trying to come up with a solution to what has been repeatedly explained to be an inherent characteristic of pianos, in general,  but you also insist on it being quick, portable, and cheap, and designed by someone else. True crowd sourcing.


    ------------------------------
    David Skolnik
    Hastings-on-Hudson NY
    914-231-7565
    ------------------------------




  • 29.  RE: Eliminate Sustain Pedal Thump

    Posted 08-26-2015 09:35

    Crowd sourcing indeed, and the internet helps tremendously to connect passionate people.  I'm very thankful for all of the wonderful input I have received on this project.

    I don't have an incredibly specific application, but over the last 15 years or so I've encountered this problem time and again and wish to finally solve it.  The last straw was a gig I did recently involving several grand pianos on stage all playing at once.  The problem was of course magnified, and the typical pseudo-solutions involving EQ and mic placement just don't work when all you have is the piano sound and the content incorporates pop/rock styles as well as classical.  The tone of the pianos must not be sacrificed, and I work on the basis of as little maintenance as possible - I'm quick in, quick out, don't fuss too much, and don't ask all that much from people.  I get minimal sound checks, minimal interaction with artists, and yet the amplified sound is usually about 98% of the total sound the audience hears - I can't rely on the acoustic energy of the piano or hall to help me out if I'm not doing a good job, most events are outdoors anyway.  

    My clients like a very big piano sound, with lots of clean powerful bass; they really want people to "feel" the low notes.  In an effort to avoid feedback, I use cardioid subwoofers and I dedicate a Helpinstill pickup to the low strings.  I have a Yamaha C3 and these are some audio samples of me playing a bit... you'll need studio headphones or a good subwoofer to hear the issue.



  • 30.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-26-2015 10:46
    Hi, Devon:
    What comes to mind, when you mention a dashpot, is a pneumatic bellows. QRS sells, or used to, a small bellows to slow the fallboard from closing fast. It would fit beneath the keybed, and a cord connected it to the fallboard via a hole in the keybed. There was a screw that you could regulate the amount of air bleed so that the speed of the fallboard could be adjusted. You could rig up a link to one of these bellows to attach to the damper lift tray so that as it falls, the bellows would slow it down. I'm not going to speculate whether it would work properly, but it's an idea along the lines of what you mentioned. The "dashpot" idea reminds me of what I used to rebuild on a carburetor, but that would be too small.
    So, there you go. You could contact QRS and see of they still make such an item, or could make you one custom.
    Best of luck.
    Paul McCloud
    San Diego

    ------Original Message------

    Crowd sourcing indeed, and the internet helps tremendously to connect passionate people.  I'm very thankful for all of the wonderful input I have received on this project.

    I don't have an incredibly specific application, but over the last 15 years or so I've encountered this problem time and again and wish to finally solve it.  The last straw was a gig I did recently involving several grand pianos on stage all playing at once.  The problem was of course magnified, and the typical pseudo-solutions involving EQ and mic placement just don't work when all you have is the piano sound and the content incorporates pop/rock styles as well as classical.  The tone of the pianos must not be sacrificed, and I work on the basis of as little maintenance as possible - I'm quick in, quick out, don't fuss too much, and don't ask all that much from people.  I get minimal sound checks, minimal interaction with artists, and yet the amplified sound is usually about 98% of the total sound the audience hears - I can't rely on the acoustic energy of the piano or hall to help me out if I'm not doing a good job, most events are outdoors anyway.  

    My clients like a very big piano sound, with lots of clean powerful bass; they really want people to "feel" the low notes.  In an effort to avoid feedback, I use cardioid subwoofers and I dedicate a Helpinstill pickup to the low strings.  I have a Yamaha C3 and these are some audio samples of me playing a bit... you'll need studio headphones or a good subwoofer to hear the issue.



  • 31.  RE: Eliminate Sustain Pedal Thump

    Posted 08-26-2015 11:48
    My wife used to have a Datsun roadster with a dashpot carburetor, but I
    was thinking more along the lines of the pneumatic dashpot the old
    Pianocorder pedal solenoid had, for the very reason this thread is
    about. Only it was the other direction. A bellows would need stiff
    gussets to keep from popping as the pressure reversed, and you'd need a
    soft landing valve system that didn't restrict movement through any of
    the rest of the range. You could build something from scratch, but the
    available soft fall pneumatic wouldn't work without extensive
    modification, in which case you'd be building your own anyway.

    It is doable depending on the final demands for perfection (There will
    still be damper noise), but it will cost money for someone who can do
    it, and the tea leaves tell me it will not be gracefully received in
    venue. It won't be a "once and for all" fix, but will generate another
    set of aggravations.
    Ron N

    ------Original Message------

    Hi, Devon:
    What comes to mind, when you mention a dashpot, is a pneumatic bellows. QRS sells, or used to, a small bellows to slow the fallboard from closing fast. It would fit beneath the keybed, and a cord connected it to the fallboard via a hole in the keybed. There was a screw that you could regulate the amount of air bleed so that the speed of the fallboard could be adjusted. You could rig up a link to one of these bellows to attach to the damper lift tray so that as it falls, the bellows would slow it down. I'm not going to speculate whether it would work properly, but it's an idea along the lines of what you mentioned. The "dashpot" idea reminds me of what I used to rebuild on a carburetor, but that would be too small.
    So, there you go. You could contact QRS and see of they still make such an item, or could make you one custom.
    Best of luck.
    Paul McCloud
    San Diego



  • 32.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-26-2015 12:13

    I would be very cautious in developing a mechanism that slows the dampers returning to the strings. In legato pedalling, especially in quick playing, the damper pedal goes up and down very quickly to clear the sound when the harmony changes. This is a very common pedal technique, and if this is compromised, then the "fix" would be a flop.


    ------------------------------
    Peter Stevenson RPT
    P.S. Piano Service
    Prince George BC
    250-562-5358
    ps@pspianoservice.com
    ------------------------------




  • 33.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-26-2015 12:20

    I agree with Peter, that the player would have to recalibrate (and may not be able to), and with Ron that such a change would likely open up another can of worms. Of course, you could "go there" as a means of ultimately having them accept damper noise within norms as the lesser of two evils. (Kinda like voting for president!)

    On Aug 26, 2015 9:13 AM, "Peter Stevenson via Piano Technicians Guild" <Mail@connectedcommunity.org> wrote:
    Please do not forward this message due to Auto Login.

    Pianotech

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    Re: Eliminate Sustain Pedal Thump
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    Aug 26, 2015 12:13 PM
    Peter Stevenson

    I would be very cautious in developing a mechanism that slows the dampers returning to the strings. In legato pedalling, especially in quick playing, the damper pedal goes up and down very quickly to clear the sound when the harmony changes. This is a very common pedal technique, and if this is compromised, then the "fix" would be a flop.


    ------------------------------
    Peter Stevenson RPT
    P.S. Piano Service
    Prince George BC
    250-562-5358
    ps@pspianoservice.com
    ------------------------------

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    ------Original Message------

    I would be very cautious in developing a mechanism that slows the dampers returning to the strings. In legato pedalling, especially in quick playing, the damper pedal goes up and down very quickly to clear the sound when the harmony changes. This is a very common pedal technique, and if this is compromised, then the "fix" would be a flop.


    ------------------------------
    Peter Stevenson RPT
    P.S. Piano Service
    Prince George BC
    250-562-5358
    ps@pspianoservice.com
    ------------------------------




  • 34.  RE: Eliminate Sustain Pedal Thump

    Posted 08-26-2015 12:32
    That's what I was trying to do.
    Ron N

    ------Original Message------

    I agree with Peter, that the player would have to recalibrate (and may not be able to), and with Ron that such a change would likely open up another can of worms. Of course, you could "go there" as a means of ultimately having them accept damper noise within norms as the lesser of two evils. (Kinda like voting for president!)

    On Aug 26, 2015 9:13 AM, "Peter Stevenson via Piano Technicians Guild" <Mail@connectedcommunity.org> wrote:
    Please do not forward this message due to Auto Login.

    Pianotech

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    Re: Eliminate Sustain Pedal Thump
    Reply All Online Reply All Email
    Aug 26, 2015 12:13 PM
    Peter Stevenson

    I would be very cautious in developing a mechanism that slows the dampers returning to the strings. In legato pedalling, especially in quick playing, the damper pedal goes up and down very quickly to clear the sound when the harmony changes. This is a very common pedal technique, and if this is compromised, then the "fix" would be a flop.


    ------------------------------
    Peter Stevenson RPT
    P.S. Piano Service
    Prince George BC
    250-562-5358
    ps@pspianoservice.com
    ------------------------------

      Reply to Sender   View Thread   Recommend   Forward  
    -------------------------------------------
    Original Message:
    Sent: 08-26-2015 11:47



     
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  • 35.  RE: Eliminate Sustain Pedal Thump

    Posted 08-26-2015 12:29
    There are a whole lot of reasons not to do it, and only one to do it -
    to overcome the reality of the situation for the recording engineer's
    benefit. This isn't a new situation, and it's practically gotten around
    (to whatever degree it's possible) by microphone placement. Surely
    you've been asked by a customer to make her piano do something
    physically impossible. This is one of those times.
    Ron N

    ------Original Message------

    I would be very cautious in developing a mechanism that slows the dampers returning to the strings. In legato pedalling, especially in quick playing, the damper pedal goes up and down very quickly to clear the sound when the harmony changes. This is a very common pedal technique, and if this is compromised, then the "fix" would be a flop.


    ------------------------------
    Peter Stevenson RPT
    P.S. Piano Service
    Prince George BC
    250-562-5358
    ps@pspianoservice.com
    ------------------------------




  • 36.  RE: Eliminate Sustain Pedal Thump

    Posted 08-26-2015 14:04

    Pachelbel? Another thing to try is a pair of floor-mounted BLM's or PZM's about 6ft away from the curved side. They should be about 10" apart. and, of course, need to be on a non-carpeted floor with a couple of hassocks on the audience side to stop sound from there.      Michael   UK



    ------------------------------
    Michael Gamble
    semi retired
    Brighton
    01273813612
    ------------------------------




  • 37.  RE: Eliminate Sustain Pedal Thump

    Posted 08-26-2015 14:19

    Michael that is a great mic solution for frequencies above about 200Hz.  My problem is that I need to have very clean amplification all the way down to 27Hz.  There really isn't a conventional mic which can give me clarity at those lower frequencies without also picking up rumble, wind noise (these events are often outdoors), and of course feedback from the PA Subwoofers...  it's a very tough situation.



  • 38.  RE: Eliminate Sustain Pedal Thump

    Posted 08-27-2015 07:09

    Devin - try E-V RE20's    They go down to about 20Hz.  I've got a couple but am too far away . . . . .    Michael   UK

    ------------------------------
    Michael Gamble
    semi retired
    Brighton
    01273813612
    ------------------------------




  • 39.  RE: Eliminate Sustain Pedal Thump

    Posted 08-27-2015 07:24

    I currently live in Barcelona, so maybe not so far!  I've used that mic before, it's a great mic!  My only concern, and hence the reason I switched to a pickup-style mic, is gain before feedback in that range, and also rejecting wind noise (these shows are often outdoors) and rumble from the stage and whatnot.  Cardioid subwoofers help, but I've had a lot of feedback problems with conventional mics in this regard, especially when I get ten or more grand pianos on stage all playing at once.



  • 40.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-27-2015 09:08

    Devin -

    Barcelona is nice.

    With respect, I'll pursue my stream of inquiry a bit further, even without much by way of response.  

    You've referred to "10 grands" on stage, more than once, so I'm surprised that hasn't been examined a bit more.  Googling  "10 grands" brings up a range of performances that might relate to what you're involved with.  If so, it would have helped to have that as a reference.  If it's something other, it would help to understand how what you're doing differs from these examples.
    http://www.snowmanfoundation.org/ten-grands/

    https://www.youtube.com/watch?v=Dd1B2Y6ZSq4

    If you're doing concerts with 10 pianos, there HAS to be a formidable piano technician presence for you to interact with, whether you are doing so or not.  Even IF someone here came up with an effective mechanical solution, are YOU actually going to go through 10 pianos to perform the modifications?  Keep in mind that, at least to my knowledge, Steinway doesn't use a capstan adjust to limit damper pedal travel.

    These are amplified pianos, so what are we, as acoustic piano technicians, talking about?  Are these pianos prepped (by the venue/dealer) any differently than they would be for a purely acoustic application?  

    And finally, for now, how come we haven't isolated where the 'thump' is actually coming from?  Is it the actual dampers on strings? One or more elements of the trapwork?  The stage?  It might help to start with knowing that.

    ------------------------------
    David Skolnik
    Hastings-on-Hudson NY
    914-231-7565
    ------------------------------




  • 41.  RE: Eliminate Sustain Pedal Thump

    Posted 08-27-2015 09:23

    That's funny, didn't realize this was on YouTube.  There are several versions of the Ten Grands concept done around the place, this wasn't one that I was involved with.  But the Ten Grands situation is only one of several types of gigs where I would need to solve this problem (it is a problem at all such events), and certainly the kind of event where the problem is most exaggerated.  I've done a lot of experimenting on various pianos, and I've isolated the problem to particularly when the dampers come down onto the strings especially quickly.  That's why my essential question in this forum is how to slow down the strings before they land, whether that is through the use of a dashpot, or limiting their height, or some other trick.  And yeah, I'm not a qualified piano technician, so I need something I can do quickly in and out.  At the Ten Grands event, they have piano tuners, but they move fast and we don't have any spare time to dink with things otherwise, and the client likes to not have to deal with or really think about the PA at all.  This is also true of most other gigs I do along these lines...  As you can see from the other forum, an electronic solution seems possible, but I thought that I'd raise the subject here just incase there was a mechanical way of fixing the issue which I hadn't thought of before.



  • 42.  RE: Eliminate Sustain Pedal Thump

    Posted 08-29-2015 16:04


    Ah! Barcelona and the Cemetery of forgotten books . . . according to Carlos Luis Zafon. but, oddly enough  don't know about 'pickup Mics. Yet since this subject is really too removed from the preferred subject devoted to this site I'd better drop it now.   Michael    UK
    ------------------------------
    Michael Gamble
    semi retired  
    Brighton
    01273813612
    ------------------------------




  • 43.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-26-2015 21:11

    I'm sure it's something I'm (my computer is) doing wrong, but I hear next to nothing from those samples.  What are they? You referred to them in a later email as providing an example of the problem, but I certainly am not hearing it, studio headphones or not, not withstanding.

    Devin, while the problem has generated an interesting array of suggestions and information, the solution does not rest with the mechanics of the piano.  You have described so many conflicting criteria that it makes me think that this is a very personal and self-driven quest.  There seems to be so much contradiction in the parameters: high expectations (source not clear) with no time allowed to execute; where you are expected (or expect yourself) to be 'invisible', where you don't generally interact with the artist(s); where you expect (or are expected) to provide great 'live' sound, even outdoors while still providing a superior recording.  

    Here's what you wrote:

    several grand pianos on stage all playing at once. The problem was of course magnified, and the typical pseudo-solutions involving EQ and mic placement just don't work when all you have is the piano sound and the content incorporates pop/rock styles as well as classical. The tone of the pianos must not be sacrificed, and I work on the basis of as little maintenance as possible - I'm quick in, quick out, don't fuss too much, and don't ask all that much from people. I get minimal sound checks, minimal interaction with artists, and yet the amplified sound is usually about 98% of the total sound the audience hears - I can't rely on the acoustic energy of the piano or hall to help me out if I'm not doing a good job, most events are outdoors anyway.

    My clients like a very big piano sound, with lots of clean powerful bass; they really want people to "feel" the low notes. In an effort to avoid feedback, I use cardioid subwoofers and I dedicate a Helpinstill pickup to the low strings. I have a Yamaha C3 and these are some audio samples of me playing a bit... you'll need studio headphones or a good subwoofer to hear the issue.

    I have to admit that, taken as a whole, this makes little sense to me.  Does the audience leave, mumbling about too much thump?  Are the artists hearing it in their headphones?  Is it possible that the stage itself is a source of your problem?  Can you experiment with the same piano in different settings to see what conditions effect the symptoms?  And, after all this time, you must have had countless discussions with piano technicians, on site, since, after all, it's they who are (sort of) responsible for dealing with these problems at the piano. 

    ------------------------------
    David Skolnik
    Hastings-on-Hudson NY
    914-231-7565
    ------------------------------

    -------------------------------------------
    Original Message:
    Sent: 08-26-2015 09:34
    From: Devin Sheets
    Subject: Eliminate Sustain Pedal Thump

    Crowd sourcing indeed, and the internet helps tremendously to connect passionate people.  I'm very thankful for all of the wonderful input I have received on this project.

    I don't have an incredibly specific application, but over the last 15 years or so I've encountered this problem time and again and wish to finally solve it.  The last straw was a gig I did recently involving several grand pianos on stage all playing at once.  The problem was of course magnified, and the typical pseudo-solutions involving EQ and mic placement just don't work when all you have is the piano sound and the content incorporates pop/rock styles as well as classical.  The tone of the pianos must not be sacrificed, and I work on the basis of as little maintenance as possible - I'm quick in, quick out, don't fuss too much, and don't ask all that much from people.  I get minimal sound checks, minimal interaction with artists, and yet the amplified sound is usually about 98% of the total sound the audience hears - I can't rely on the acoustic energy of the piano or hall to help me out if I'm not doing a good job, most events are outdoors anyway.  

    My clients like a very big piano sound, with lots of clean powerful bass; they really want people to "feel" the low notes.  In an effort to avoid feedback, I use cardioid subwoofers and I dedicate a Helpinstill pickup to the low strings.  I have a Yamaha C3 and these are some audio samples of me playing a bit... you'll need studio headphones or a good subwoofer to hear the issue.



  • 44.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-30-2015 01:35

    OK, I listened to these samples and I'm very tempted to call you out as a troll. Both samples sound like a bass heavy stereo from the neighbors upstairs. My guess is that they contain only the bass Helpinstill pickup channel and nothing else. First of all, without hearing that one channel in context with the rest of the piano there is NO way to interpret what you are pretending to do. And as far as.... "The tone of the pianos must not be sacrificed, and I work on the basis of as little maintenance as possible - I'm quick in, quick out, don't fuss too much...", you lie. The samples you provided are processed so heavily that even someone who doesn't know what their listening to would probably be annoyed but the pumping of your over-compression and gating. These samples are not at all what I would consider clean, powerful bass. 

    On the other hand, I'm not surprised by the quality coming out of the Helpinstill pickup. It is, afterall, a pickup much like one you would find on a solid body electric guitar, and not a mic. You are asking it to perform far outside its intended use. No wonder you are having problems. 

    -- GS


    ------------------------------
    Geoff Sykes, RPT
    Los Angeles CA
    ------------------------------




  • 45.  RE: Eliminate Sustain Pedal Thump

    Posted 08-30-2015 03:26
    Geoff,

    Thanks very much...you beat me to it...after 86 entries, many of them
    repetitive, this thread was past useful.

    I listened to the provided samples through both of my main audio
    systems...both easily capable of reproducing the required 30Hz (and
    lower) at SPLs most people would find painful; and found things pretty
    much as you describe them.

    Devin,

    You've had numerous valuable suggestions from a number of folks who,
    like myself, have spent many years doing the tuning and related
    technical support in major venues for situations like you describe. So
    far, all we've had for our trouble is, essentially, being told how
    little we understand the problem. While there may be some puzzlement
    with your inability to recognize that whatever solution you appear to
    have in mind may not, in fact, exist, there is no disrespect involved.

    I do find myself wondering what model Helpinstill you are using, where
    it is placed, and what signal processors (and settings on them) you use
    to create such a unique piano sound.

    If you ever do find a way out of this briar patch, please do let us know
    so that we can use what you learn for the help and advantage of others.

    Thank you very much.

    Kind regards.

    Horace




    On 8/29/2015 10:34 PM, Geoff Sykes via Piano Technicians Guild wrote:
    > Please do not forward this message due to Auto Login.
    >
    >
    > OK, I listened to these samples and I'm very tempted to call you out as a troll. Both samples sound like a bass heavy stereo from the neighbors upstairs. My guess is that they contain only the bass Helpinstill pickup channel and nothing else. First of all, without hearing that one channel in context with the rest of the piano there is NO way to interpret what you are pretending to do. And as far as.... "The tone of the pianos must not be sacrificed, and I work on the basis of as little maintenance as possible - I'm quick in, quick out, don't fuss too much...", you lie. The samples you provided are processed so heavily that even someone who doesn't know what their listening to would probably be annoyed but the pumping of your over-compression and gating. These samples are not at all what I would consider clean, powerful bass.
    >
    >
    > On the other hand, I'm not surprised by the quality coming out of the Helpinstill pickup. It is, afterall, a pickup much like one you would find on a solid body electric guitar, and not a mic. You are asking it to perform far outside its intended use. No wonder you are having problems.
    >
    >
    > -- GS
    >
    >
    >
    > ------------------------------
    > Geoff Sykes, RPT
    > Los Angeles CA
    > ------------------------------
    >
    > -------------------------------------------
    > Original Message:
    > Sent: 08-26-2015 09:34
    > From: Devin Sheets
    > Subject: Eliminate Sustain Pedal Thump
    >
    >
    >
    >
    > Crowd sourcing indeed, and the internet helps tremendously to connect passionate people. I'm very thankful for all of the wonderful input I have received on this project.
    >
    >
    > I don't have an incredibly specific application, but over the last 15 years or so I've encountered this problem time and again and wish to finally solve it. The last straw was a gig I did recently involving several grand pianos on stage all playing at once. The problem was of course magnified, and the typical pseudo-solutions involving EQ and mic placement just don't work when all you have is the piano sound and the content incorporates pop/rock styles as well as classical. The tone of the pianos must not be sacrificed, and I work on the basis of as little maintenance as possible - I'm quick in, quick out, don't fuss too much, and don't ask all that much from people. I get minimal sound checks, minimal interaction with artists, and yet the amplified sound is usually about 98% of the total sound the audience hears - I can't rely on the acoustic energy of the piano or hall to help me out if I'm not doing a good job, most events are outdoors anyway.
    >
    >
    > My clients like a very big piano sound, with lots of clean powerful bass; they really want people to "feel" the low notes. In an effort to avoid feedback, I use cardioid subwoofers and I dedicate a Helpinstill pickup to the low strings. I have a Yamaha C3 and these are some audio samples of me playing a bit... you'll need studio headphones or a good subwoofer to hear the issue.
    >
    >
    > Reply to Sender : http://my.ptg.org/eGroups/PostReply/?GroupId=43&SenderKey=25d111e5-69df-4509-b862-b712660e51a6&MID=652807&MDATE=756%253a45%253d485&UserKey=3feecf45-4a69-4cff-bbb2-fd6c7eaf0569&sKey=KeyRemoved
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    ------Original Message------

    OK, I listened to these samples and I'm very tempted to call you out as a troll. Both samples sound like a bass heavy stereo from the neighbors upstairs. My guess is that they contain only the bass Helpinstill pickup channel and nothing else. First of all, without hearing that one channel in context with the rest of the piano there is NO way to interpret what you are pretending to do. And as far as.... "The tone of the pianos must not be sacrificed, and I work on the basis of as little maintenance as possible - I'm quick in, quick out, don't fuss too much...", you lie. The samples you provided are processed so heavily that even someone who doesn't know what their listening to would probably be annoyed but the pumping of your over-compression and gating. These samples are not at all what I would consider clean, powerful bass. 

    On the other hand, I'm not surprised by the quality coming out of the Helpinstill pickup. It is, afterall, a pickup much like one you would find on a solid body electric guitar, and not a mic. You are asking it to perform far outside its intended use. No wonder you are having problems. 

    -- GS


    ------------------------------
    Geoff Sykes, RPT
    Los Angeles CA
    ------------------------------




  • 46.  RE: Eliminate Sustain Pedal Thump

    Posted 08-30-2015 04:46

    Put aside the "quality" of the audio, that's my responsibility and this forum isn't about that anyway... but you hear the thump?  You can even see it on a simple level meter.  Those samples have a low-pass at 100Hz applied to them, because that's what is sent to the subwoofers in the system.  

    I believe I've had my questions answered here, so why don't we call it quits before we all hate each other.  Ain't nobody got time for that.

    Thanks everyone for your input, I appreciate your time and expertise.  Maybe I'll do a shout out to the next piano gig I do using these techniques and y'all came come by and take a listen for yourself.



  • 47.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-26-2015 08:04

    Limit the height of the dampers with the/a up-stop screw.  I deal with this all the time with player systems.  If the dampers don't go up as high, they don't come crashing down causing the "thumping" sound.  They should be lifting just barely off the strings, literally.. just barely.  Almost to a point where you can't see it.  And test the keys with 'semi-hard' blows to make sure all the strings pass that tolerance.  

    This is the best solution "in 5 or 10 minutes", but the pianoist will notice a difference in the pedal, and probably complain.  Most good players like to have a half-pedal point, and this solution will eliminate that, or atleast minimize it.

    Good luck.


    ------------------------------
    Dave Foster
    Foster Piano Technology
    Waterford MI
    248-431-8804
    ------------------------------




  • 48.  RE: Eliminate Sustain Pedal Thump

    Posted 08-26-2015 13:44

    I have the same prob using my Soundfield SPS422 mic. One solution I saw posted on this site was changing the inclination of the damper heads so the front of the damper head touched the string before the rear (or was it the other way round?) But this solution takes time and should obviously be done by a Very Competent Technician. Is this problem related to just any-old piano or just S&S &c.   Try resiting your pair of ORTF configuration mics.      Michael   UK

    ------------------------------
    Michael Gamble
    semi retired
    Brighton
    01273813612
    ------------------------------




  • 49.  RE: Eliminate Sustain Pedal Thump

    Posted 08-26-2015 13:56

    My trouble with mic placement is that I need maximum gain before feedback.  I use cardioid subwoofers, which helps, and I use a pickup style mic on the low frequencies and blend it in with a stereo pair of mics handling the mids and highs.  This combo does everything I want, except for picking up a fair amount of this thumping sound as can be heard in those audio samples I posted.  I agree that it seems treacherous to mess with the dampers, and would not be able to be done quickly anyway.  I'll email QRS to see what they have... any "soft landing" effect would need to be incredibly short in duration, and maybe there is no duration short enough in practicality to not mess with the playability.



  • 50.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-26-2015 14:18

    Devin

    I don't know much about recording equipment, other than I do know that some mikes can be very sensitive. Some can pick up all sorts of extraneous noises if they are placed in the wrong place. You might know this, but if you put a sensitive mike inside the action cavity, you could puck up all sorts of sounds.

    That is why you should take a look at where you place your mikes. Do some experiments, and decide what works, and what doesn't

    Wim Blees

    Mililani, HI










    om: Devin Sheets
    Subject: Eliminate Sustain Pedal Thump

    My trouble with mic placement is that I need maximum gain before feedback.  I use cardioid subwoofers, which helps, and I use a pickup style mic on the low frequencies and blend it in with a stereo pair of mics handling the mids and highs.  This combo does everything I want, except for picking up a fair amount of this thumping sound as can be heard in those audio samples I posted.  I agree that it seems treacherous to mess with the dampers, and would not be able to be done quickly anyway.  I'll email QRS to see what they have... any "soft landing" effect would need to be incredibly short in duration, and maybe there is no duration short enough in practicality to not mess with the playability.



  • 51.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-26-2015 14:37

    Greetings.

    There is one simple thing that can be done to attenuate the damper return noise.  Adjust the damper trap lever stop mechanism.  It is usually either a capstan or dense felt.  Stop the pedal travel prematurely so that the dampers just barely clear the strings.  They will then have less distance to fall back to the strings, resulting in less noise.  The capstan adjustment can be done in one minute.  Just turn it out counter clockwise until the dampers just clear all of the strings with the sustain pedal fully depressed.

    ------------------------------
    Carl Lieberman
    RPT
    Venice CA
    310-392-2771
    ------------------------------




  • 52.  RE: Eliminate Sustain Pedal Thump

    Posted 08-26-2015 14:43

    Yes that seems to be a possible solution, but as long as the player is ok with not having any options other than full mute or full sustain, right?  



  • 53.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-26-2015 15:02

    It would certainly be more difficult to use half-pedal or partial-pedal technique with the pedals adjusted that way. However, pianists are used to adapting to pedal inconsistencies. Unfortunately, many pianists are forced to perform with maladjusted pedals and poorly-regulated dampers. So although advanced pianists would not be performing at their best, they could probably make do. If you are in a pop/rock situation, I don't think that it would be a problem at all.

    The other issue is that if you are doing this yourself, you need to be sure that you are giving the dampers adequate lift and that you are putting it back to the correct spot afterwards. You will probably want to spend a few minutes with a good piano technician to go over the details with you, as well as explaining the different kinds of trapwork mechanisms that you might encounter.

    ------------------------------
    Peter Stevenson RPT
    P.S. Piano Service
    Prince George BC
    250-562-5358
    ps@pspianoservice.com
    ------------------------------




  • 54.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-26-2015 20:27

    Flame suit on! Remove the trapwork return spring. Place softer felt under the back of the pedal.


    ------------------------------
    Larry Messerly, RPT
    Bringing Harmony to Homes
    www.lacrossepianotuning.com
    ljmesserly@gmail.com
    608-518-2441
    928-899-7292
    ------------------------------




  • 55.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-27-2015 01:12

    Devin --

    A lot of good suggestions here already. Carl's is perhaps the best for reducing the stored energy of the dampers falling back into place. But since I used to be a recording engineer myself, let me throw out something different to think about. 

    As already mentioned here, that thump is, unfortunately, inherent to some degree in most pianos. It's always been there. For me, when I was engineering in the studio, the solution when the piano was going to be close miced and in a mix involving other instruments was a hi pass filter to knock out enough of it that the rest was simply covered over, masked, by the rest of the instruments. For more piano featured recording I would mic from a much greater distance. That would automatically eliminate a lot of the mechanical noise. And again, a careful use of hi pass filtering. But I also understand that sound reinforcement places a lot of restrictions on micing techniques that work just fine in the studio. 

    Music recording, and audio recording in general, back in my day, had a much narrower preferred and usable frequency response to deal with. Only 20Hz to 20K, technically. With digital recording, however, you can literally record way above what any human could possibly hear, and clear down to DC, and that can cause problems.

    The lowest first partial on a piano is around 27 Hz, still within that old frequency spectrum. The strings down there, however, express very little of that first partial. 2nd and 3rd partials are most prominent with that first partial sort of supplying the balls that make you think you hear that frequency. 

    On a good day, with a very young person, they MIGHT be able to hear as low as about 12 Hz. I'm gonna suggest that your thump is down in that range.

    One of the problems I see in your description is the use of sub woofers. They are, of course, going to amplify that thump. If you boost those extraordinarily low frequencies below 20 Hz you cannot avoid also amplifying the unwanted mechanical noises of the piano. You are essentially amplifying frequencies that are not part of the musical sound of the instrument because you want to feel the power. And I mean feel. Those frequencies are more felt than heard anyway. Why not clean them up?

    My recommendation is for you to not mic quite so close when you can avoid it, and especially with high end mics that can pick up those very low frequencies. Don't be afraid of using some EQ. Use a very sharp curved hi pass filter to just get rid as much as you can of the frequencies below 27 Hz. With sub woofers involved nobody is doing any critical listening, except you I hope. And I'm going to guess that nobody in the audience will ever hear/feel the difference, and your problematic thump will be well into the background noise, where it belongs. 

    -- GS


    ------------------------------
    Geoff Sykes, RPT
    Los Angeles CA
    ------------------------------




  • 56.  RE: Eliminate Sustain Pedal Thump

    Posted 08-27-2015 04:41

    The thump centers around 30Hz, but it really is from about 10Hz-100Hz strong.  I use a really good PA system, very clean down to 27Hz, and there really is a big difference in the sound when things below 40Hz are high passed.  Yeah it still sounds big, but not nearly as much as feeling that fundamental down there, and the clients want it - and the artists tell me they even really enjoy having a bit of that energy on stage too.  

    So it seems my option here is to limit the damper height, use a dashpot to slow the dampers down just before impact, or to continue with an electrical solution after the microphone which was talked about in the other forum that was referenced.

    Sorry if my application seems a bit confusing and hard to explain... Thanks everyone for all of the brilliant suggestions!



  • 57.  RE: Eliminate Sustain Pedal Thump

    Posted 08-27-2015 06:39

    Slowing damper return delays damping and will cause unwanted over ring. Have the tuner/technician limit the upwards lift of the dampers but adequately clear the strings with whatever upstop system is in place. it might mean backing out a screw or addition of a certain thickness of felt.

    But then again, the thump could come into play for the percussive aspects, as one piano player in a Baptist church said (after I re-engaged the dislodged pedal rod), "You fixed the tempo pedal!"


    ------------------------------
    Regards,

    Jon Page



  • 58.  RE: Eliminate Sustain Pedal Thump

    Posted 08-27-2015 07:20

    Actually, any thumping caused by the player physically slamming their foot on the pedal (usually to keep personal time) isn't an issue for me, since most people interpret that as a musical element, probably because it has high rhythmic correlation to the main beat.  The thumping from the pedal release is rather uncorrelated, and so when it comes through in the PA subwoofers as a thump or popping sound, it is interpreted as a malfunction of the sound system or the instrument itself.  The PA I'm using is big enough to do Metallica, so these kinds of problems are magnified far beyond even what is heard acoustically while sitting at the instrument...



  • 59.  RE: Eliminate Sustain Pedal Thump

    Posted 08-27-2015 10:53
    > Slowing damper return delays damping and will cause unwanted over ring.

    Like is such a big problem with Yamaha's Disklavier, which is why nobody
    buys them?

    Ron N

    ------Original Message------

    Slowing damper return delays damping and will cause unwanted over ring. Have the tuner/technician limit the upwards lift of the dampers but adequately clear the strings with whatever upstop system is in place. it might mean backing out a screw or addition of a certain thickness of felt.

    But then again, the thump could come into play for the percussive aspects, as one piano player in a Baptist church said (after I re-engaged the dislodged pedal rod), "You fixed the tempo pedal!"


    ------------------------------
    Regards,

    Jon Page



  • 60.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-27-2015 11:54

    PianoDisc player systems have a solenoid that actuates the damper lift mechanism.  There isn't any pulsing or electronic wizardry that I know of that slows down it's return.  To eliminate the thump on return I adjust the lift so the felts barely clear the strings.  Standing next to the piano while it's playing I can't hear the thump.  It's VERY faint.

    When I play the piano I roll my foot to activate the sustain pedal.  Maybe my size 13's are the reason why I can do this and smaller shoes don't have the reach that mine do.  The rolling nature of the activation slows down the application and the release .... a little bit.  Technique is everything.  I realize you have to deal with what you have to work with and so limiting the travel of the damper lift would be a the fastest way to facilitate your needs.  If nothing else, it would reduce the effect and the process is easily reversed.

    ------------------------------
    Larry Fisher
    Owner, Chief Grunt, Head Hosehead
    Vancouver WA
    360-256-2999
    ------------------------------








  • 61.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-27-2015 11:56

    This problem isn't new.  I think the microphone is too close to the dampers.  I heard a studio recording of Horowitz in the 90s when after some incredibly delicate, beautiful and nuanced playing, he lets the sustain pedal up slowly and there is a very pronounced "boink" as the dampers settle.  It ruined the recording, I thought, and it could have been avoided just by having the microphone further away, not down its throat.  You'd never hear that from even a short distance away.  To complain that  you can hear it when the microphone is close makes me want to compare it to looking at an old painting with a magnifying glass and complaining that you can see cracks in the paint. Or the microphone so close to the singer you can hear the them breathing. The piano isn't made to be listened to so close up.  I know all recording studios do this with pianos, I just don't understand why.

    ------------------------------
    Robert Callaghan
    Reno NV
    775-287-2140
    ------------------------------




  • 62.  RE: Eliminate Sustain Pedal Thump

    Posted 08-27-2015 12:05

    Robert, in a live situation, it comes down to gain before feedback.  Because of the directional nature of higher frequencies, it is easier to get more gain in those frequencies from further away.  The trick is how to get gain at lower frequencies, and particularly in this case, gain at the very lowest frequencies.  It is almost impossible to get gain or any clarity in that range unless the mic is very, very close to the source.  I even use cardioid subwoofers, which helps, but ultimately I am forced to close-mic the instruments.  I do have a stereo pair of mica which I place further away that are reserved for only picking up the mids and highs.  I do a blend of these mics to get the full sound...



  • 63.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-27-2015 12:21
    Devon:
    Since the sound comes out of the soundboard, why not mic from the bottom of the piano? All the action noise will then be much farther away. There is not much sound coming from the actual strings themselves, so it shouldn't matter which side of the board is mic'd, and there will be less likely to be feedback. In fact, you could isolate the underside of the piano by cutting pieces of acoustic foam and stuffing them between the beams, with the mics in the cavity it would form. The audience would never see it.
    Good luck.
    Paul McCloud
    San Diego

    ------Original Message------

    Robert, in a live situation, it comes down to gain before feedback.  Because of the directional nature of higher frequencies, it is easier to get more gain in those frequencies from further away.  The trick is how to get gain at lower frequencies, and particularly in this case, gain at the very lowest frequencies.  It is almost impossible to get gain or any clarity in that range unless the mic is very, very close to the source.  I even use cardioid subwoofers, which helps, but ultimately I am forced to close-mic the instruments.  I do have a stereo pair of mica which I place further away that are reserved for only picking up the mids and highs.  I do a blend of these mics to get the full sound...



  • 64.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-27-2015 12:32

    Devon,

    …and if you try Paul's suggestion--but find that the thumping you seek to attenuate becomes MORE prominent rather than less--then you will have confirmed that the offending sound is not coming from the dampers returning to the strings, but from somewhere else in the pedal trap work.

    ------------------------------
    Alan Eder, RPT
    Herb Alpert School of Music
    California Institute of the Arts
    Valencia, CA
    661.904.6483
    ------------------------------




  • 65.  RE: Eliminate Sustain Pedal Thump

    Posted 08-27-2015 12:33

    Paul, I strongly considered doing this, with C-Tape and whatnot, but when I was experimenting I found that the sounding board is actually quite prone to feedback between 25Hz-100Hz, almost as much as a regular mic over the strings.  It does get a clearer sound in that range than regular mics, and it rejects wind noise (very important for me), but I ended up going with a Helpinstill because it has a lot more gain before feedback and an even clearer sound in that range (to my ears at least), and it also rejects wind noise because it isn't an acoustic device.  








  • 66.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-27-2015 13:09

    The thump you are unhappy about is inherent in the instrument. Under normal circumstances that thump is way into the background noise and not problematic. Now you are introducing electronics and amplification to boost the frequency range that includes the frequencies of that thump and you are asking that the instrument be modified to correct the problem. I seriously doubt that that's going to happen. All I'm suggesting is that the problem isn't with the instrument. 

    All microphones are subject to the proximity effect. The closer you get to a sound source the louder the LF components are going to be. That's one of the primary reasons why mic's have those built in hi pass filters. You're not going to get rid of the thump at the piano mechanical level. Compromise is in order. Modify your micing techniques. Experiment with different forms of EQ, like hi pass filters or really steep notch filters. Stick a frequency tuneable limiter in the signal path that only reacts to the frequencies in the thump range, (good luck). I'm sure you can think of lots of other things to try as well. Just accept the fact that the thump is there and that it is you that is bringing it out and making it heard, and work with it. 

    I once had to record a solo clarinet. I'd worked with clarinets before but never alone. I was shocked to hear all the mechanical noise the keys on that instrument make. All over the place. There was no way to get rid of it. I eventually wound up pulling the mic back as far as I could without forcing the sound of the room in the recording, but the clicks were still there and bothering me a lot. I could not figure out what I was doing wrong. We recorded a couple of minutes of my best compromise and the musician came into the control room to see what I had. He listened to it for a moment and said it was great. It sounded exactly like his instrument while he was out there playing it. I asked about the mechanical noise and he simply said that that's what a clarinet sounds like. Live with it. 

    -- GS


    ------------------------------
    Geoff Sykes, RPT
    Los Angeles CA
    ------------------------------




  • 67.  RE: Eliminate Sustain Pedal Thump

    Posted 08-27-2015 13:24

    I totally agree with you there, it is very much a part of the inherent sound.  However, I know that this sound is purposefully eliminated in most piano samples, because the untrained ear (aka, the average person) usually does not make the correlation between the sound and the mechanics of the instrument and therefore interprets the sound (especially through a large PA system) as being a problem rather than a musical aspect.  Much like the noise on a record player, and how most people today listening to CD's would simply interpret any noise in their music as a problem, rather than an authentic part of most audio recording up until the 80's.  If people want that background noise these days, they need to insert it within a context where it is clear to the average person that an older style recording is trying to be represented.  In my case, there is no context, and people assume they are going to hear a piano sound much like what they hear on most modern recordings, even pop/rock and cinematic genres.  So without getting up on stage and explaining to the audience where this sound comes from and why they should re-interpret it as innocuous, it will be heard as an annoying "problem" with something.  And yet, most of the solutions for fixing this by using EQ and other methods completely get rid of that very large, deep piano sound in the low frequency that everybody wants.  It's a tricky situation...



  • 68.  RE: Eliminate Sustain Pedal Thump

    Posted 08-27-2015 14:17

    Let's say I was going to try to use a dashpot or shock absorber of some kind.  Where is the best place to position it, in terms of ease and speed of positioning, the least amount of hardware, and accessible within seconds if there is a malfunction of some kind?



  • 69.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-27-2015 14:48
    Hi, Devon:
    I would put it under the damper tray, but then you'd have to remove the action to access it. I'd put it in the center so the forces are equalized. If you put it under the piano, it's more likely that the damper tray is going to be held too close to the underlevers and that will make the dampers bleed. I've seen many player installations where this happens because the player trapwork didn't allow the tray to drop away from the underlevers.
    The adjustment you're going to need to make this work properly, using a mechanical arrangement, is going to be troublesome at best. Something (dashpot, whatever) has to be positioned so that the falling damper levers are all stopped by the damper tray as they crash down, and then the tray must fall away immediately to allow the dampers to work. That's not to mention that the inertia of the system (damperheads, and underlevers) is needed to seat the damper firmly enough for them to work. If they are moving too slowly, the dampers will likely bleed before they completely shut off the vibrations. So, they must fall at a minimum speed to do their job. Since you're adding something to cushion the fall, you'll need to determine exactly what that minimum speed is in order for the dampers to work properly. I do believe that the level of precision and timing you're going to need is beyond a simple dashpot mechanism, if you're going to get reliable results. It's hard enough to make dampers work properly as it is!
    One adjustment you could try is to make a slight bend on the damper wire so that it makes the wire lean a bit to one side, thus adding a little extra friction on the side of the bushing as it rides up and down. Some companies like to do this to keep the damper from wiggling around while it is in the air. It would prevent the dampers from falling so fast.
    Paul McCloud

    ------Original Message------

    Let's say I was going to try to use a dashpot or shock absorber of some kind.  Where is the best place to position it, in terms of ease and speed of positioning, the least amount of hardware, and accessible within seconds if there is a malfunction of some kind?



  • 70.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-27-2015 14:57

    OK.  Let's try this:

    Would you be having this issue if you were in a recording studio with a) solo piano; b) ensemble?

    Would you be having this problem recording on an indoor concert hall stage, solo piano or ensemble, all UN-amplified?

    From the segment below, you now seem to be trying to accommodate a presumed level of listener expectation which has been nurtured by piano samples and movie soundtracks.  

    "that very large, deep piano sound in the low frequency that everybody wants."

    In other words, listeners who would be totally un-moved by the sound of an unamplified piano.

    As I, and some others have suggested, to the extent that there is any remediation to be had - quick and dirty, or not - you need to start by determining the source or sources: pedal, trapwork, damper tray, dampers, stage.

    And, going back a bit, who are these supremely entitled artists who presumably want an effect but are unwilling or unable to modify their technique to achieve it?  
    ------------------------------
    David Skolnik
    Hastings-on-Hudson NY
    914-231-7565
    ------------------------------




  • 71.  RE: Eliminate Sustain Pedal Thump

    Posted 08-27-2015 15:12

    The events are open to the public, and I simply cater to the expectations of those listening - I don't really offer my opinion one way or another about those expectations, it's just my job and I try to do it well.  I wouldn't say most people are unimpressed by the sound of an acoustic piano in a nice hall, but there is a unique quality about hearing it amplified on a great sounding PA especially outdoors that is simply impossible to achieve otherwise, and it is akin to the sound people are used to hearing in movie theaters, headphones, cars... that larger-than-life sound.  I give them that.  

    My latest thought is to use one of those soft-close devices that they put on drawers and cupboard doors... maybe positioning it under that lever that the pedal bar pushes up on?  Do all the major brands have this lever exposed underneath?  I haven't thought about how I would attach it yet... and of course I'd have to find one that rides the fine line between between too fast or too slow.



  • 72.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-27-2015 20:03

    Same piano each time? Damper and pedal stops matter but perhaps the key is absolutely minimizing lost motion. Most pianists do not actually take their feet rapidly on and off the pedals but excess lost motion can make it seem like it. Nearly every well used piano has a little more lost motion than it needs. Check una corde too.

    ------------------------------
    Paul

    ------------------------------




  • 73.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-27-2015 20:21

    My last effort.  
    "The events are open to the public"

    I give up.  What events are these?  Are there any examples - You Tube or otherwise - that you can link?   For someone who's role is to remain mostly invisible (by your earlier description), you seem to have an acute sensitivity to the expectations of the listeners, not to mention the artists.  This is hard for me to accept, in the abstractness generated by the absence of any concrete examples.

    In the end, you are unable to accept the reality of limited options because you are not a piano technician, and the explanations that have been provided do not ultimately seem to register with you,  in a manner not unlike the discussion you engaged in on the electronics blog. This kind of thread has a fascinating way of perpetuating itself, as, when it goes on long enough, new people come aboard without having read all earlier exchanges and respond to fragments of the picture.

    As a piano technician, this thread would hold much more interest for me if we were talking about the differences (if any) in approach to preparing a piano for amplified vs. pure acoustic application.  

    Can you provide an example?


    ------------------------------
    David Skolnik
    Hastings-on-Hudson NY
    914-231-7565
    ------------------------------




  • 74.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-28-2015 11:08

    A strangely long discussion of a fantasy desire. I'll just throw in another wrinkle: if you successfully manage to slow the drop of the damper tray (whether acting on it directly or via the trap work), you are going to need to assume wonderfully even damper lift from the tray, or you will get noticeable bleed and oink from those dampers that are retarded in their fall before they quite hit the strings. If they are all perfectly lifting off (and touching on return) simultaneously, the oink/bleed sound will be across the spectrum, and far more annoying than the thump.

    As a pianist, I can't imagine wanting to play on a piano outfitted with such a device, even if it were perfectly regulated. There would be delay in the damper action, what ever was done, and that would be impossible to deal with successfully (maybe not so for the damper pedal as an "on/off" switch, but for any pianist with any degree of finesse in pedal technique). 

    ------------------------------
    Fred Sturm
    University of New Mexico
    fssturm@unm.edu
    http://fredsturm.net
    http://www.artoftuning.com
    "We either make ourselves happy or miserable. The amount of work is the same." - Carlos Casteneda
    ------------------------------




  • 75.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-28-2015 13:24

    I happen to be doing annual maintenance on a Steinway D. There is next to zero pedal thump from dampers onto strings. I believe this is because they are regulated so that the backs of the heads lift a bit earlier (just a smidgen) than the fronts (so the reverse occurs on return), and also because of the way the underlevers are screwed to the tray, which produces a bit of front/back motion.

    I can make a real loud thump if I depress the pedal and then suddenly slide my foot (or finger) off the pedal. In fact, it sounds like more of a snap than a low pitched thump, or at any rate contains both elements. It doesn't happen if I lift my foot as fast as I can, though if I lift rapidly and entirely off the pedal, there is some degree of noticeable noise.

    I can't really trace that "snap" sound to a precise location. Seems to be coming from the entire keybed and the tray itself - vibrating at their resonant pitches. A higher pitched component seems to be more from the tray. Interesting. Sounds like the wood of the tray is hitting against something. It isn't. There are felt pads on the dags, and the tray doesn't reach them. It is only touching via the pitman and the pivot pins. The pivot blocks are tightly screwed. This is a transitory pitman design: the pitman is wood, and rides in bushed holes in the trap and bottom of the tray, as opposed to having larger holes and a front rail punching. Maybe that is why they changed the design. When I get time, I'll convert it and see what happens.

    ------------------------------
    Fred Sturm
    University of New Mexico
    fssturm@unm.edu
    http://fredsturm.net
    http://www.artoftuning.com
    "We either make ourselves happy or miserable. The amount of work is the same." - Carlos Casteneda
    ------------------------------




  • 76.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-28-2015 23:46

    I can only remember one event I ever attended where I found the quality of sound reinforcement problematic to my experience. And it was absolutely attributable to the venue, NOT the sound reinforcement. If you are doing your job correctly the quality of the sound reinforcement will not be noticed unless it's in the way. The band and their show is the focus of both the band and the audience. Is the audience actually walking up to you and complaining about the thump? Does the band complain about the thump? Pump up the body pounding frequencies and filter out the narrow band of thump, since it bothers you. Accept that perfection is NOT possible. Let the band and audience enjoy the moment and the show for what it is, and move on. 

    Devin -- The power of the bottom end in movies that you say you are attempting to achieve does not happen in the recording process. It is very much manufactured in the controlled environment of post. 

    --GS


    ------------------------------
    Geoff Sykes, RPT
    Los Angeles CA
    ------------------------------




  • 77.  RE: Eliminate Sustain Pedal Thump

    Posted 08-29-2015 04:10


    Here's yet another 'wrinkle' - I listened to the two tracks Devin put on-line and came to the following conclusions: 1. He's having us on. 2. It was at about quarter speed - therefore not what an audience would hear - and equally not a true representational sample of what (if anything) he's trying to achieve. 3. The samples were the Bass line of a. Amazing Grace and b. Pachelbe's Canon (maybe that SHOULD in this context be spelled with 2 x n's)  And this, Ladies and Gentlemen, should conclude this post.

    <G>  Michael   UK
    ------------------------------
    Michael Gamble
    semi retired
    Brighton
    01273813612
    ------------------------------




  • 78.  RE: Eliminate Sustain Pedal Thump

    Posted 08-29-2015 04:24

    The first sample is the theme from the movie Legends of the Fall, the second is the opening to Brahms Rhapsody in G Minor Op79 No2.  You will need a speaker or headphone which can reproduce flat down to at least 30Hz to hear what I'm talking about.  Or, you can simply watch a level meter and see the pops at the logical pedal points...



  • 79.  RE: Eliminate Sustain Pedal Thump

    Posted 08-29-2015 04:51

    Geoff sadly I am a perfectionist... also, I and the people I work with are trying to do real cutting edge work in the live sound industry, breaking barriers and exploring new possibilities - opening people's minds and ears to what can be.  It goes against a lot of institutionalized theory, and at some point one just has to hear it to believe it.  Routinely, I get many compliments from audience members after shows about how they particularly noticed that the sound was smooth, or present, or that it impacted them positively in a way they've never heard before - people who are not musicians or sound engineers, people young and old, and this confirms for me a long held belief that truly great sound can actually add to a performance, not merely function as a neutral facilitator or custodian.  I know this goes against everything they teach in Audio 101, but I have to follow my ears.  

    Thanks everyone for the input, I value your expertise and your time here!  If you aren't bored with this thread, I'd love to engage further with anyone who has more thoughts about this...



  • 80.  RE: Eliminate Sustain Pedal Thump

    Posted 08-29-2015 07:05

    The only way to deal with this issue is with the piano player. Pedal technique will make-or-break the performance to your standards. Inform the player of the issue and they will either be able to control it or not depending on their ability given the condition of the piano.

    Nothing short of new (softer) felt and customized damper regulation will attenuate this issue.

    So it's in the hands or the performer (or feet rather).


    ------------------------------
    Regards,

    Jon Page



  • 81.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-29-2015 10:48

    Devin -

    With respect, many of the people on this list are perfectionists as well, and they have, as you say, given of their time and expertise.  You have managed to sustain what Fred described as ..."A strangely long discussion of a fantasy desire...". And yet, you have managed to do this without revealing much about yourself or what you're actually doing.  The discussion has been prolonged, in significant part, by your persistent employment of vaugery:

    Geoff sadly I am a perfectionist... also, I and the people I work with are trying to do real cutting edge work in the live sound industry, breaking barriers and exploring new possibilities - opening people's minds and ears to what can be. It goes against a lot of institutionalized theory, and at some point one just has to hear it to believe it. Routinely, I get many compliments from audience members after shows about how they particularly noticed that the sound was smooth, or present, or that it impacted them positively in a way they've never heard before - people who are not musicians or sound engineers, people young and old, and this confirms for me a long held belief that truly great sound can actually add to a performance, not merely function as a neutral facilitator or custodian. I know this goes against everything they teach in Audio 101, but I have to follow my ears.

    This whole paragraph is such an example.  I can't pick one.  Just close my eyes and point.  

    And yet, when I, and most recently, Michael Gamble, questioned the only 'sound' examples you provided, your reassert that 'we' need to obtain some specialized equipment - 

    You will need a speaker or headphone which can reproduce flat down to at least 30Hz to hear what I'm talking about. Or, you can simply watch a level meter and see the pops at the logical pedal points...

    And when I tried to encourage you to get a bit more specific, by referring to the 10 Piano presentations on YouTube, you chose not to expand or offer anything further.

    At some point, for all your perfectionism and worship of the listening experience, you seem to have some difficulty actually hearing.


    ------------------------------
    David Skolnik
    Hastings-on-Hudson NY
    914-231-7565
    ------------------------------




  • 82.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-29-2015 11:47

    Devin,

    Please accept my apologies for those on this list who choose to shift the discussion about piano technology to finding fault about the person. There's always one or two in the group who find enjoyment with such thinly veiled insults. 

    ------------------------------
    Roger Gable
    Gable Piano
    Everett WA
    425-252-5000
    ------------------------------




  • 83.  RE: Eliminate Sustain Pedal Thump

    Posted 08-29-2015 11:57

    He said "with respect" ... that fixes it, right? ;-)

    It's really hard to offend me, otherwise I wouldn't survive in the live sound industry.



  • 84.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-29-2015 12:15

    The 'insulting' version of proffering respect would be: "with all DUE respect".  I just said "With respect", so, yes, that does fix it.

    Let's be clear, again.  I'm not trying to offend you.  I'm trying to encourage you to stop what presents as playing games.  You have persisted in asking for help, but you haven't been adequately forthcoming with information or examples.  Can you simply respond to the matter at hand?
    ------------------------------
    David Skolnik
    Hastings-on-Hudson NY
    914-231-7565
    ------------------------------




  • 85.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-29-2015 12:09

    Roger -

    Again, with respect, this conversation has not been ABOUT piano technology for quite some time, nor is it personal.  It's about communication.  As others have pointed out, this discussion has gone on for quite some time, and yet, somehow, Devin wants it to go on some more, but without answering some fairly key questions, including your own.  Your own 'thinly veiled' reference to me is misguided.  My comments, on the other hand, are not 'veiled' at all.  I'm simply asking for more forthrightness.

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    David Skolnik
    Hastings-on-Hudson NY
    914-231-7565
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  • 86.  RE: Eliminate Sustain Pedal Thump

    Posted 08-29-2015 12:32

    I'm at a loss, but to say that you should take those two audio samples, go listen to them on a sound system capable of reproducing flat down to 30Hz (that's what I'm mixing on at these concerts) and first recognize what the problem is.  Then, having heard it, and trusting that I've experimented enough on my own to isolate the problem to the dampers landing on the strings (not the pounding of the foot or other problems), and that this is common to every piano I've ever worked with, and knowing that my choice of microphone is a Helpinstill pickup over the low strings, let's find a way to mitigate this sound.  I don't see how it matters to know exactly what clients I work for or much else... I can merely say that I really don't have the option of asking players to alter their playing style (even so, I can't risk them forgetting in the middle of the show), and that I don't have the time or expertise to tweak too much with the piano itself, other than very basic things which need to be undone after the show in a timely manner as well.  My guess is that I need to find some way of applying a mechanical device to the external pedal action which slows down the dampers before impact, or some easy way of adjusting the height of the dampers, or a combination of both, in such a way that does not screw too much with the playability of the piano.  Otherwise, my choice is a post-microphone electronics-based option as you can see from the other forum, but that's a last resort.  



  • 87.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-29-2015 14:09

    Let's stay with that first point for a moment:  a sound system capable of reproducing flat down to 30Hz

    Give me an example of what sort of equipment that entails, on a consumer level.  

    And go one step more.   Why are you unable to provide an actual sample of the total performance, even unattributed, that would give the entire discussion some context, because for you to say that your artists are demanding enough to want to mitigate this sound, but incapable of altering their technique to accomplish this goal makes them sound like entitled children.  Mind you, nothing personal against entitled children

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    David Skolnik
    Hastings-on-Hudson NY
    914-231-7565
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  • 88.  RE: Eliminate Sustain Pedal Thump

    Registered Piano Technician
    Posted 08-29-2015 14:20

    Fred is so right about perfect lift. With it the sustain pedal rod can even be set w/o any lost motion by partially supporting the weight of the damper system similar to how a grand jack and balancer share the hammer assembly load as opposed to the lost motion generally necessary for upright jacks. Whether they use it or not this gives a pianist the most reliable way to let the system down gently w/o an additional device. 

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    Paul
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