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Related Experiment Videos

Voice onset time in speech produced during simultaneous communication

N Schiavetti1, R L Whitehead, D E Metz

  • 1State University of New York Geneseo, USA.

Journal of Speech and Hearing Research
|June 1, 1996
PubMed
Summary

Simultaneous communication (SC) slows speaking rate and increases voice onset time (VOT) for voiceless consonants in speakers with normal hearing. These changes maintain English voicing rules and enhance clarity, similar to clear speech.

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Area of Science:

  • Speech production and acoustics
  • Phonetics and phonology
  • Auditory communication

Background:

  • Simultaneous communication (SC) is a method used by individuals with hearing impairments.
  • Understanding acoustic modifications in SC is crucial for improving communication accessibility.
  • Previous research has explored clear speech modifications, but SC-specific acoustic changes require further investigation.

Purpose of the Study:

  • To investigate the acoustic characteristics of speech produced during simultaneous communication (SC).
  • To compare speaking rate and voice onset time (VOT) in speech-only versus SC conditions.
  • To determine if SC speech maintains standard English phonological rules.

Main Methods:

  • Acoustic analysis of voice onset time (VOT) and speaking rate.

Related Experiment Videos

  • Participants with normal hearing produced sentences with plosive-initiated words.
  • Comparison between speech-only and simultaneous communication (SC) conditions.

    • Main Results:

    • Speech produced during SC exhibited a significantly slower speaking rate compared to speech-only.
    • Voice onset time (VOT) for voiceless consonants was significantly increased in the SC condition.
    • VOT patterns in both conditions adhered to English voicing rules and place of articulation variations.

    Conclusions:

    • Simultaneous communication (SC) leads to acoustic modifications, including slower rate and altered VOT.
    • The observed changes in SC speech may enhance the voicing contrast, potentially improving intelligibility.
    • Findings align with research on clear speech and the impact of rate changes on speech acoustics.