The Interaction of Syllabification and Voicing Perception in American English

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Kenneth de Jong
Kyoko Nagao
Byung-jin Lim

Abstract

This paper describes the results of an experiment in which speakers repeatedly produced consonants in prevocalic and postvocalic position at systematically varied repetition rates. The consonants were either 'voiced' (/b/) or 'voiceless' (/p/). These repeated syllables were then excised from the surrounding utterances and played to listeners who were asked to identify the consonant's identity and whether it was postvocalic or prevocalic. Listeners tend to identify pre-vocalic consonants as 'voiceless' and postvocalic consonants as 'voiced'. These misidentifications tend to be magnified at faster speech rates. Considering these results in light of the general allophonic shift in American English, 'voiced' prevocalic stops are actually produced as voiceless and 'voiceless' stops tend to be lenited toward voiced stops, suggests that the current allophonic variation is the result of phonetic pressures applied over a long period of time. Such phonetic pressures are detectable using paradigms which allow one to examine misalignments between production and perception.

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