Peter Roach is Emeritus Professor of Phonetics at Reading University. He is also the author of 'English Phonetics and Phonology', the fourth edition of which was published by Cambridge University Press in March 2009.

In the first part of this lecture, Peter Roach presents the early days of research into prosody, including David Crystal's continuum for examining prosody and John Laver's framework for analysing voice quality.

This lecture was recorded at the 11th Seminar on English Phonetics, hosted by the Phonetics Group Chile at UMCE, Santiago, in 2006. Our thanks to the Phonetics Group Chile for allowing us to use this material.

For more information about 'English Phonetics and Phonology', visit www.cambridge.org/elt/peterroach.

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