Tuning with a fork

[Alan Forsyth]

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Bob Davis wrote;


"The 5th partial of ~F3~ on the other hand, is ~A5~, which matches the =
desired A4 at its SECOND partial, A5 [a 5:2 match]. The A5 produced by =
the fork is harmonic, but that produced by the piano is a little sharp. =
Matching this coincidence causes the piano's A4 to be slightly flat. =
F4-A4 [a 5:4 match, coincident at A6] would produce an even flatter A4, =
with equal beats between the fork and piano............."

I was not aware that tuning forks were supposed to have partials or =
harmonics. Aren't they supposed to have pure tones?

AF
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