The most current research in speech science is presented in this collection of papers. The unifying theme of the collection is the relationship between phonological representations of the grammatical structure of speech, and physical models of the production and perception of actual utterances. The authors, including leading specialists from the fields of phonology, electrical engineering, linguistic phonetics, and psychology, provide a wide range of views on this question. There are papers dealing with the relationship between phonology and phonetics as it applies to tone in Hausa, to intonation, stress and phrasing in English and German, to universals of patterning in sonority and syllable structure, and in consonant place assimilation, to speech synthesis tools for testing phonological and phonetic theories, and to three different models of articulatory structure. An introductory chapter by the editors outlines the aim of the volume and provides a short overview of the papers.