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Meaning of acoustic feature

acous'tic fea'ture

Pronunciation: [key]
— Phonet. Phonet.
  1. any acoustic property of a speech sound that may be recorded and analyzed, as its fundamental frequency or formant structure.
  2. an acoustic property that defines a class of speech sounds, esp. in distinctive feature analysis, as acute, grave, or diffuse.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.