acoustic feature

noun

, Phonetics.

any acoustic property of a speech sound that may be recorded and analyzed, as its fundamental frequency or formant structure.
an acoustic property that defines a class of speech sounds, especially in distinctive feature analysis, as acute, grave, or diffuse.

acoustic feature

phonetics any of the acoustic components or elements present in a speech sound and capable of being experimentally observed, recorded, and reproduced

They are not responsible for any specific sound or acoustic feature of sounds except, possibly, accent or stress.

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