High Quality Content by WIKIPEDIA articles! Formants are defined by Fant as 'the spectral peaks of the sound spectrum |P(f)|' of the voice. Formant is also used to mean an acoustic resonance, and, in speech science and phonetics, a resonance of the human vocal tract. It is often measured as an amplitude peak in the frequency spectrum of the sound, using a spectrogram or a spectrum analyzer, though in vowels spoken with a high fundamental frequency, as in a female or child voice, the frequency of the resonance may lie between the widely-spread harmonics and hence no peak is visible. In acoustics, it refers to a peak in the sound envelope and/or to a resonance in sound sources, notably musical instruments, as well as that of sound chambers. However, it is equally valid to talk about the formant frequencies of a room, as exploited, for example, by Alvin Lucier in his piece I Am Sitting in a Room.

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