3C55.31 - Combination Tones
- Candice Harder-Viddal, "Another Look at Combination Tones", TPT, Vol. 57, #5, May 2019, p. 315.
- Don Olson, "Musical Combination Tones and Oscillations of the Ear Mechanism", AJP, Vol. 37, #7, July 1969, p. 730.
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