I didn't mean anything too fancy by "side by side". They could even be separate videos. And yeah a phone mic recording of the same piano would make sense since that's what we normally use...
Original Message:
Sent: 08-29-2024 22:53
From: Steven Rosenthal
Subject: Peterson PitchGrabber, a second look.
Nathan, thanks for the summation. Yes, the notes mostly were -12 to -4dB; I think the important thing is that all the partials -appearing as peaks- are there and seem to be proportionate as well as consistent from note to note. I made another recording with a DR-40 audio recorder and the levels were more even and tone quality a little better, it starts on C1, I can publish that.
Good idea about the side by side recording, I guess I could use 2 devices simultaneously and sync them up in Logic Pro. By normal mic, I assume you mean one in a device we use for ETD apps.
Btw, the voicing problems apparent in the recording are actually real problems with the piano but the recording seems to amplify them. Interesting.
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Steven Rosenthal RPT
Honolulu HI
(808) 521-7129
Original Message:
Sent: 08-29-2024 17:52
From: Nathan Monteleone
Subject: Peterson PitchGrabber, a second look.
So, I want to make sure I'm seeing what I think I'm seeing/hearing here (I know I'm mostly repeating things you already typed):
- Noise floor looks like it's around -54dB
- At the beginning you're talking at the soundboard, and it peaks at about -34dB
- The actual notes are in more the -18 to -6dB range, so they are significantly stronger than the voice that's getting picked up
- The note partials generally seem to be all accounted for as clear peaks on the spectrum graph, at least up to 4-5kHz or so. (More may be present, I realize there's some auto-zooming going on here).
Is that correct? If so I think that sets a good baseline for what the pitchgrabber will do when it's working correctly and plugged into a compatible jack.
It might be interesting to see a side-by-side comparison with the response from a normal mic, as well as going all the way down to A0 and up to C88... But I realize we can't always get to everything.
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Nathan Monteleone RPT
Fort Worth TX
(817) 675-9494
nbmont@gmail.com
Original Message:
Sent: 08-28-2024 23:28
From: Steven Rosenthal
Subject: Peterson PitchGrabber, a second look.
PitchGraber spectrum test. Recorded on iPhone via lightning using the VoiceMemo utility set to lossless. Noise floor -54, vocal test -34 spoken about 3 feet from soundboard under the keybed with bottom board removed at 75-80db. C2–G7
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Steven Rosenthal RPT
Honolulu HI
(808) 521-7129
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