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1. Formant

   Linked via "acoustic spectrum"

   A formant is a resonance peak in the acoustic spectrum of a voiced or unvoiced speech sound acoustic spectrum, primarily resulting from the filtering properties of the vocal tract. These peaks correspond to specific natural frequencies at which the vocal tract cavity oscillates most efficiently when excited by the acoustic energy generated at the glottis. Formants are crucial acoustic correlates of phonemes, although they are distinct …