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Beating the bounds: Localized timing cues to word segmentation

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  • Laurence White
  • Sven Mattys
  • Linda Stefansdottir
  • Victoria Jones


Publication details

JournalAcoustical Society of America. Journal
DateAccepted/In press - Aug 2015
DatePublished (current) - 28 Aug 2015
Issue number2
Number of pages7
Pages (from-to)1214-1220
Original languageEnglish


Prosody facilitates perceptual segmentation of the speech stream into a sequence of words and phrases. With regard to speech timing, vowel lengthening is well established as a cue to an upcoming boundary, but listeners’ exploitation of consonant lengthening for segmentation has not been systematically tested in the absence of other boundary cues. In a series of artificial language learning experiments, the impact of durational variation in consonants and vowels on listeners’ extraction of novel trisyllables was examined. Language streams with systematic lengthening of word-initial consonants were better recalled than both control streams without localized lengthening and streams where word-initial syllable lengthening was confined to the vocalic rhyme. Furthermore, where whole vowel-consonant sequences were lengthened word-medially, listeners failed to learn the languages effectively. Thus, the structural interpretation of lengthening effects depends upon their localization, in this case, a distinction between lengthening of the onset consonant and the vocalic syllable rhyme. This functional division is considered in terms of speech-rate-sensitive predictive mechanisms and listeners’ expectations regarding the occurrence of syllable perceptual-centres.

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(c) 2015 The Authors. This is an author produced version of a paper published in Journal of the Acoustical Society of America. Uploaded in accordance with the publisher's self-archiving policy.

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