Doug, The frequencies may be calculated by multiplying each successive half step by the twelfth root of 2 (1.0594631). Hence: A 220.000 A# 233.082 B 246.942 C 261.626 C# 277.183 D 293.665 D# 311.127 E 329.628 F 349.228 F# 369.994 G 391.995 G# 415.305 A 440.000 Note that these are theoretical frequencies and that actual frequencies in real pianos will differ due to inharmonicity, which causes the harmonics to go a bit sharp. > Doug Garman wrote: > > List-- > > A customer has asked for the formula whereby he might calculate the > (theoretical) frequencies of notes on the piano. I'd kinda like that > myself. Better yet he says he would be happy with a chart that lists > such since he does not have a computer to do the calculations. > > He is a middle age gentleman who says he is planning to start teaching > piano and just wants the information in case students ask. Sounds > strange to me, but who am I to judge. :o) > > Thanks for in advance for the formula(s) and/or attachments with > charts. Let's keep it simple for him (and me). > > Doug Garman, Assoc. Member PTG > Granbury, TX
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