trichords unisons

[Joe And Penny Goss]

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
>