Fundamental frequency (F0)

Fundamental frequency (F0) is the rate of vocal-fold vibration — perceived as the pitch of a voice, typically ~85–180 Hz for adult males and ~165–255 Hz for adult females.

F0 movement encodes intonation and emotion; pitch trackers extract it for prosody research, voice analysis and tuning tools. It is also why high-pass filtering below the voice's F0 range is safe cleanup.

Related terms

ProsodyProsody is the melody of speech — pitch movement, rhythm, stress and pauses — carrying meaning beyond the word… FrequencyFrequency is how many times per second a sound wave cycles, measured in hertz (Hz) — perceived as pitch, with …