Fundamental frequency/pitch

Frequency is the primary acoustic correlate of the perceived pitch of a voice. The fundamental frequency corresponds to the rate of vocal fold vibration, and also to the frequency of the lowest harmonic of the voice spectrum.

Pitch is also partly related to the resonant frequencies of the speaker’s vocal tract, so that the voice of a speaker with a small vocal tract will sound higher pitched than that of a speaker with a larger vocal tract, other things being equal.

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