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The origin of vowel-length neutralisation in vocoid sequences: evidence from Finnish speakers

Published online by Cambridge University Press:  30 March 2006

Scott Myers
Affiliation:
University of Texas at Austin
Benjamin B. Hansen
Affiliation:
University of Texas at Austin

Abstract

A number of languages have independently developed a pattern of vowel-length neutralisation according to which a vowel after a vocoid must be long. It is proposed that this pattern arises from the inherent acoustic ambiguity of such sequences, which are realised with a diphthongal transition from one formant pattern to the next, with no clear boundary between the two. Neutralisation in vocoid sequences originates from listeners' difficulties in determining the duration of vowels in this context. Lengthening of the second vocoid arises when listeners attribute some of the transition duration to that segment. The phonetic bases of this account are supported by three experiments with Finnish speakers. A production study shows that speakers treat the transition as belonging in part to the realisation of the postvocoid vowel. Two perception studies show that increasing the duration of the transition increases the probability of such a vowel being identified as long.

Type
Research Article
Copyright
2005 Cambridge University Press

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Footnotes

We would like to thank the following people for helping us to learn about Finnish: Arto Anttila, Heli Harrikari, Benita Heiskanen, Kari and Asta Leppänen, Satu Ollikainen, Juha Poutiainen, Kristiina Rosser, Suvi Simila, Jenny Söderman, Helena Tiainen and the wonderful people of the Finnish Language School of North Texas. We have benefited from helpful comments from Megan Crowhurst and Marta Ortega-Llebaria, and from an associate editor, the editors and three anonymous reviewers for Phonology. We gratefully acknowledge funding for this work from the National Science Foundation (grant BCS-0345649).