Click here -> Video Link on YouTube: The Piano Sound Is A Moving Target
The Piano Sound Is A Moving Target
This video presentation comes as the result of original research, with results that have never been prior shown in the technical literature. I believe it to be a major breakthrough to the understanding of the nature of the piano sound. The work presented was peer reviewed and vetted carefully. It will evolve into a future journal publication. The video is more than just theory, it presents sound demonstrations to validate the points. I will be at the upcoming convention in Reno for further discussion opportunities.
Statement of the Problem :
• The piano sound is never in a steady state of settled frequency, hence, a 'moving target.'
• The cleanliness of sound is most perceived just after the attack in real piano music.
• There is no such thing as an instantaneous measure of frequency; it occurs over a 'window of time.'
• Ultimately, the question: "When, in time, do we set the tuning, and on what basis?"
• Each string and its partials generally has a unique frequency decay characteristic.
• When unisons coupled, the Weinrich Drift effect can be profound, at least 1 ½ cents, with a significant delay after the attack. Each coupled unison will have its own 'signature' and spreading effect.
• 'Unintended consequences' as 'damaged inharmonicity' from slight spreading and not tuning in the first initial attack period.
• There is a lack of objective data in the literature showing the actual frequency changes over time.
• Therefore, the details of this phenomenon are not universally understood, nor agreed upon.
• We are left with many subjective methods dealing with it, many diametrically opposed.
• Each preferred method will produce a different outcome.
Solution:
• Make 'new technology' to show in real time how the partials of a given string are changing frequency over time, giving the piano technician a 'target in time' that is consistent and repeatable.
• Make this a more objective practice, raising the bar to a higher level in the piano tuning industry.
• Sound demonstrations are presented to validate the points.
------------------------------
Steven Norsworthy
PianoSens.com
steven@rf2bits.comCardiff By The Sea, CA
(619) 964-0101
------------------------------