Newton Hunt wrote: >Moisture content of the board will vary the FAC numbers one the _same_ piano. At first I thought, no way. How could the moisture content of the board affect inharmonicity? Then I thought of a way. If the board swells up, the pitch rises. To tune the pitch back to standard, the string must be lengthened slightly from the tuning pin end. This brings a new point of contact on the string at the tuning pin end of its speaking length. Now bends in the string at the point of contact are known to affect inharmonicity. If the new point of contact has a different amount of bend from the old point of contact, inharmonicity can be changed. Can anyone think of another mechanism by which this could occur? -Bob Scott
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