The Logic Off Topic list

Zeek Duff...
> If you're yalking about the piano tuning formula starting from a perfect
> octave then tuning slighty flat descending and slightly sharp ascending

Zeek, I'd like to see this formula, if it's not too much trouble for you to
dig it up.

> There's also a study about the "coupled motion of
> strings" that it's based upon;

There's a bunch of papers listed at the bottom of this page that may be what
you're describing.

http://ptg.org/birkett/Default.htm

Do you recall under what umbrella organization the study that you're talking
about was published?  AES, Acoustical Society, etc.?

-- Marvin Humphrey 
Mastering Engineer...Graphic Designer, emeritus
Mr. Toad's, San Francisco, California, USA
CD design website - http://marvin.mrtoads.com