Summation Tone

summation tone

[sə′mā·shən ‚tōn]
(acoustics)
Combination tone, heard under certain circumstances, whose pitch corresponds to a frequency equal to the sum of the frequencies of the two components.

Summation Tone

 

a combination tone of frequency to, ω1 + ω2 that arises in a nonlinear acoustic system under the action of two sound oscillations having the frequencies to, ω1 and ω2 (see alsoCOMBINATION OSCILLATIONS).

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The combination tones between any two frequencies A and B are obtained by adding and subtracting the two frequencies: A + B gives the summation tone while A - B gives the difference tone.