Combination Tones at Frequencies Greater Than the Primary Tones
- 10 August 1979
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 205 (4406) , 600-602
- https://doi.org/10.1126/science.451625
Abstract
The existence of audible combination tones at frequencies greater than the primary tones that generate them has long been problematic. With primary tones at frequencies f 1 and f 2 , combination tones at f 1 + f 2 , 2f 2 - f 1 , and other frequencies can be demonstrated and measured by using a contralateral probe tone to establish a binaural interaction with a given combination tone. The estimated amplitudes of these higher-frequency combination tones are generally 20 to 40 decibels below the amplitude of the primary tones.Keywords
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