Donath, Th., Natke, U., Kalveram, K.Th. (2002) Effects of frequency-shifted auditory feedback on voice F0 contours in syllables. Journal of the Acoustical Society of America, 111(1), 357-366. PDF-Download
Abstract
Previous studies have shown that, during continuous vocalization, voice fundamental frequency (voice F0) is modified by frequency shifted auditory feedback. In this study, effects of frequency-shifted auditory feedback on voice F0 contours were determined for the first two syllables of the non-sense word [tatatas]. Results show that voice F0 is auditorily controlled with a high latency and responses are not interrupted by onset and offset of phonation itself. Furthermore, rapid adaptation effects can be found in voice F0 in trials after frequency shift. It is argued that the purpose of the auditory-vocal system is not to control voice F0 precisely within single syllables, but rather on supra-segmental level in the context of prosody.

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