Compensation for pitch-shifted auditory feedback during the production of Mandarin tone sequences

Number 1352
Year 2004
Drawer 25
Entry Date 01/31/2008
Authors Xu, Yi, Larson, Charles R., Bauer, Jay J., Hain, Timothy C.
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Publication Acoustical Society of America, Vol. 116 (2) August 2004, pp. 1168-1178
url http://www.haskins.yale.edu/Reprints/HL1352.pdf
Abstract Recent research has found that while speaking, subjects react to perturbations in pitch of voice auditory feedback by changing their voice fundamental frequency (Fo ) to compensate for the perceived pitch-shift. The long response latencies ( 150-200 ms) suggest they may be too slow to assist in on-line control of the local pitch contour patterns associated with lexical tones on a syllable-to-syllable basis. In the present study, we introduced pitch-shifted auditory feedback to native speakers of Mandarin Chinese while they produced disyllabic sequences /ma ma/ with different tonal combinations at a natural speaking rate. Voice Fo response latencies (100-150 ms) to the pitch perturbations were shorter than syllable durations reported elsewhere. Response magnitudes increased from 50 cents during static tone to 85 cents during dynamic tone productions. Response latencies and peak times decreased in phrases involving a dynamic change in Fo . The larger response magnitudes and shorter latency and peak times in tasks requiring accurate, dynamic control of Fo , indicate this automatic system for regulation of voice Fo may be task-dependent. These findings suggest that auditory feedback may be used ti help regulate voice Fo during production of bi-tonal Mandarin phrases.
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