[Re: ETD Question]

[Ron Nossaman]

>Hi Mark,
>
>I am afraid you are quite wrong about pianos not changing significantly.
>Unfortunately the sound board influences inharmonicity, and the sound board
> changes with humidity and temperature. Some one has used the term
>"impedance" of the board--not truely the correct term, but it does change.
>Many FAC users will attest to the numbers changing over time.  
>Regards,
>Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T.


Yo Don,
So what *is* the correct term?

Ron N