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Is there a good book reference on the definition of "subharmonic frequency" as integer fractions of the highest available frequency?

qazwsx
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  • There are a few here: https://en.wikipedia.org/wiki/Subharmonic#References – MBaz Oct 03 '15 at 23:31
  • Well, they are music and acoustic books, but I need a mathematical, or electrical engineering, or DSP area book reference. – qazwsx Oct 04 '15 at 04:15

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"Highest available frequency" sounds fishy but here's a reference from dynamics:

Book clip

Cunningham, Walter Jack. Introduction to Nonlinear Analysis. 1st ed. New York, USA: McGraw-Hill, 1958, pp. 191–192.

ISBN 10: 0070149178 ISBN 13: 9780070149175

Olli Niemitalo
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