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Perceptual Study of Segments of Intervocalic Stops and Affricates
An experiment was conducted to determine the effect on perception of deleting different numbers of 10-ms segments from the initial and final parts of spoken vowel-consonant-vowel (VCV) syllables. Eight stop consonants (p, t, t, k, b, d, d, g) and two affricates (t symbol, dz*) were embedded with vowels (i, a, u) to have 30 VCV stimulus words. An electronic gating apparatus was used to record sequential segments of these syllables on a magnetic tape. The VC and the CV stimuli so obtained were presented to listeners for perception, and the responses were analyzed for individual consonants as a function of time. The results indicate tht the transitions of initial and final vowels terminating into the consonant are of maximal importance for the recognition of intervocalic consonants. The data indicate that the plosive burst plays a more important part in the recognition of unvoiced stops than in the case of voiced stops. The plosive gap was found to play a greater role in the recognition of voiced stops. An analysis of the perceptual errors has also been made according to various distinctive features.: : * Note: Unfortunately, we cannot obtain the correct phonetic symbol for the Hindi affricate, therefore, z has been substituted.
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