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The Salience And Perceptual Weight Of Secondary Acoustic Cues For Fricative Identification In Normal Hearing Adults, Derek Petti

Dissertations, Theses, and Capstone Projects

The primary cue used by normal hearing individuals for identification of the fricatives /s/ and /ʃ/ is the most prominent spectrum of frication, which is discrete for this fricative contrast. Secondary cues that influence the identification and discrimination of these fricatives are context dependent. Specifically, the secondary cues that have been found to most significantly impact fricative perception include (a) the second formant transition onset and offset frequencies of a fricative-vowel pair, and (b) the amplitude of the spectral peak in the 2500Hz region of frication relative to an adjacent vowel’s peak amplitude in the same frequency region. However, the …