Interdyscyplinarne Centrum Przetwarzania Mowy i Języka C S L P
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Interdyscyplinarne Centrum Przetwarzania Mowy i Języka C S L P
Interdyscyplinarne Centrum Przetwarzania Mowy i Języka C S L P Center for Speech and Language Processing School of English al. Niepodległości 4 61-874 Poznań Poland phone +48 61 829 35 06, 829 35 21 fax +48 61 852 31 03 e-mail: [email protected] “Constraints on tem poral structure in speech: A pproaches and m ethods” Dafydd Gibbon, Universität Bielefeld Friday 25 November 2005 12:30 Instytut Filologii Angielskiej Collegium Novum, al. Niepodległości 4, Room 601 A The temporal structure of speech is based on a highly complex system of interacting components at all levels, from phonetic production and perception process through structural levels to the level of discourse patterning. From the phonetic point of view, the focus has very often been either on contrastive duration at the segmental level, or on the issue of prosodic isochrony, equal timing, of syllables or feet. The debate has been revived in the past 5 years or so with notable contributions from several kinds of source: first, variance based approaches in phonetics and experimental psycholinguistics, by Grabe and associates, and by Ramus and associates; second, dynamic oscillatory and automaton based approaches in computer science by Barbosa, Cummins, and Wachsmuth; third, linguistic approaches in natural and functional phonology by Dziubalska and by Schlueter. Older phonology-phonetic interface approaches by Jassem and by Campbell have also been re-discovered in recent years. The presentation addresses the problem of evaluating approaches to speech timing, focusing partially on rhythm, and scrutinises existing phonetic and psycholinguistic approaches in respect of their potential for application in computational phonetics for the analysis of large corpora of phonetic annotations of speech signals. Finally a computational method for analysing temporal structures in speech is presented, and strategies are discussed for decomposing the complex structures produced by this method into plausible modular timing factors.