THE FREQUENCY RANGE APPLICABLE TO PITCH IDENTIFICATION BASED UPON THE AUTO-CORRELATION FUNCTION MODEL

Pitch identification experiments were conducted to determine the upper boundary of the frequency range within which the autocorrelation function (ACF) model described by Ando (see Reference [16]) is applicable to the phenomenon of the missing fundamental of a complex tone. Pitch-matching tests were conducted using: (1) complex tones consisting of 2 f, 3 f, and 4 f (where f denotes the fundamental frequencies of 0·5, 1·0, 1·2, 1·6, 2·0, or 3·0 kHz) and (2) complex tones consisting of 2 f and 3 f. These tests showed that, for both kinds of complex tones, the ACF model can account for the perception of pitch when the fundamental frequency is below 1200 Hz.