Semi-log scale design

[Greg Newell]

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Ron,
         I thought that I had this book somewhere but I find that I don't. 
Is there anyone that can tell me where I might get it? I don't see it 
listed in either the Schaff or Pianotek catalogues. In absence of that, at 
least for the present, could you expound on this a bit and perhaps 
illustrate with an example or two?

Greg


At 12:16 PM 4/26/2003, you wrote:


>"Theory and Practice of Piano Construction" by William B White, is where I 
>got the method.
>
>It's around here somewhere...
>
>Essentially, you start with the natural logarithm of C-8 speaking length, 
>chose a number (try 0.02 as an example) as a progression rate, add this 
>number times the number of notes below C-8 you are to the original Ln(C-8 
>length), and take the exponential of the number. The semi-log progression 
>rate is determined by your chosen multiplier. Try it. You'll figure it 
>out. Start checking the scale progressions you find in pianos against this 
>method. It's interesting. Even what seem to be semi-log progressions 
>aren't necessarily the same progression rate throughout the scale, and 
>very often change below the first two octaves.
>
>Another handy source of confusion.
>
>Ron N
>
>_______________________________________________
>pianotech list info: https://www.moypiano.com/resources/#archives
>

Greg Newell
mailto:gnewell@ameritech.net 

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