Newton Hunt wrote: > > I don't believe this has ever been demonstrated conclusively. > > I have experienced this, for years. I have tuned the same concert > grands every week, sometimes for years, and I have measured the FAC > numbers time after time after time. The "A" changes three to four cents > from one season to the other, and it does effect the way the piano is > tuned. > Changing of "A" three to four cents from one season to another is not the same as what Don meant with the "changing inharmonicity" that the counter point above referers to. Do you mean that you have measured changes in the total inharmonicity of "A" (for example) from season to season. ? Are these changes then such that the proportional relationships of the partials is altered as I believe Don is saying, or do they all simply rise and fall proprotionally ? > > Try it yourself. Keep a record of FAC numbers then six months later > take them again. You will know then.. > > I am _good_ at taking the measurements so I know it is not me, it is the > piano. > > Newton -- Richard Brekne RPT, N.P.T.F. Bergen, Norway mailto:rbrekne@broadpark.no
This PTG archive page provided courtesy of Moy Piano Service, LLC