Pitch Discrimination of Two-Frequency Complexes

Abstract
Apparently the pitch difference limen (DL) for a single high-frequency sinusoid can be smaller in the presence of a nearby constant frequency component than in isolation. It is demonstrated that this effect arises from the time-envelope properties of the two-frequency complex. This result is consonant with those of Flanagan and Saslow who found that the pitch DL of a periodic vowel sound is smaller than the DL of a sinusoid at the fundamental frequency.

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