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Extra info for CONCUR'93: 4th Intrenational Conference on Concurrency Theory Hildesheim, Germany, August 23–26, 1993 Proceedings

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R. Hill The same consideration also applies to a question like: “Does the speaker belong to the group who lived and studied together at university” rather than which particular individual is speaking - the kind of question that may be of considerable forensic interest these days and the answer may not be readily obtained by objective means until after the fact. Foulkes and Barron’s [18] experiment shows this very clearly since there were quite salient differences between the speakers in their experimental group that were apparently ignored by human listeners who must therefore have categorized the different speakers using only perceptually relevant cues that somehow had converged considerably towards a uniform state that caused significant confusion even amongst the in-group itself.

Modelling rhythm and intonation, even in general, have proved to be contentious topics for decades, and there is a plethora of different approaches to characterizing intonation patterns and describing rhythm. One of the more obvious splits on rhythmic description is between those who consider English to have a tendency towards isochrony (equal durations between “beats” [46] and [47]), and those who say such a phenomenon is a fiction - an artifact of perception and the phonetic structure of words.

This author believes it is time to consider perceptual experiments using artificial stimuli that can closely mimic real human speech with a full spectral range. A good quality articulatory synthesizer that is easily but appropriately controlled, and which is inherently restricted to the potential acoustic output of a real human vocal tract, with supporting models to provide a foundation for manipulating speech production from the lowest sub-phonetic articulatory level up to the prosodic level of rhythm and intonation would go a long way to providing the tool needed for such perceptual experiments.

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