Hi James, Yes yep etc. And the causes range all the way from bridge notching , wire size fluxuations, string level, duplex issues, pictures on the wall, the size of the room, where the piano is in the room etc etc. Joe Goss imatunr@srvinet.com www.mothergoosetools.com ----- Original Message ----- From: "James A Busby" <jab367@email.byu.edu> To: <pianotech@ptg.org> Sent: Wednesday, May 29, 2002 9:17 AM Subject: Re: trichords unisons > Benny, > Vince Mrykalo here at BYU did a study of unisons (C1 to about C3) using an SAT > III and found some interesting things. He placed each unison perfect at one > point - usually the 1st or 2nd partial - then he measured other partials up to > about the 8th partial, and guess what? They were not exactly in tune all the way > up. (Really no surprise) Some were farther off than others. The graph was very > interesting. Conclusions? You make them. We as tuners are contstantly making > judgements calls and/or compromises, even with unisons. That may be one reason > it is referred to as the "Art $ Science" of tuning. (IMO) Hope that helps your > unison query and doesn't make it worse. > Jim Busby RPT >
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