Perceptual integration and differentiation of spectral cues for intervocalic stop consonants.
| Number | 247 |
|---|---|
| Year | 1978 |
| Drawer | 5 |
| Entry Date | 06/03/1999 |
| Authors | Repp, B. H. |
| Contact | |
| Publication | Perception & Psychophysics, 24, 471-485. |
| url | http://www.haskins.yale.edu/Reprints/HL0247.pdf |
| Abstract | Reports results of 6 experiments (using 38 paid volunteers). The place of articulation of intervocalic stop consonants is conveyed by temporally distributed spectral information--the formant transitions preceding and following the silent closure interval (VC and CV transitions). Experiment I shows that more than 200 msec of silent closure is needed to hear VC and CV formant transitions as separate phonemic events. As closure duration is reduced, these cues are integrated into a single phonemic percept, and the VC transitions become increasingly redundant. VC and CV transitions conveying different places of articulation are heard as separate phonemes at closures as short as 100 msec. If duration is further reduced, a single stop is heard whose place of articulation corresponds to the CV transitions. Even in the absence of CV transitions,VCs carry little perceptual weight at very short closures. VC transitions exert a positive bias on the perception of CV transitions at very short closure durations. At closure durations beyond 100 msec, VC and CV transitions interact contrastively in perception and tend to be heard as different phonemes. Results suggest 2 processes of temporal integration in phonetic perception, one taking place at a precategorical level, the other combining identical phoneme categories within a certain time span. |
| Notes |
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