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Related Experiment Videos

Complex encoding in word-final voiced and voiceless stops.

W J Barry

    Phonetica
    |January 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Vowel and closure duration serve as tempo-independent cues for distinguishing voiced and voiceless word endings. This acoustic property remains consistent across different speech rates, aiding speech perception.

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    Area of Science:

    • Phonetics
    • Speech Perception
    • Acoustic Phonetics

    Background:

    • The distinction between voiced and voiceless consonants is crucial for speech intelligibility.
    • Vowel and closure duration are known phonetic cues that can signal this opposition.
    • Investigating the role of these durational cues across different speech rates and positions is essential for understanding speech production and perception.

    Purpose of the Study:

    • To investigate the multifunctionality of vowel and closure duration as cues for the voiced-voiceless distinction.
    • To determine if these durational cues are tempo-independent.
    • To examine the influence of speech rate and phonetic context on the perception of the voiced-voiceless opposition.

    Main Methods:

    • Two experiments were conducted using the word pair 'bag'-'back'.

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  • Experiment I utilized synthetic speech stimuli presented at three simulated rates of speech.
  • Experiment II employed manipulated natural speech stimuli at two rates, in sentence-medial and sentence-final positions.

    • Main Results:

    • In Experiment I, the vowel/vowel + closure duration ratio was identified as a tempo-independent cue for the voiced-voiceless distinction.
    • Experiment II confirmed these findings in the final position, although interactions between durational and non-durational cues were observed.
    • A specific context effect was noted for stimuli in the sentence-medial position.

    Conclusions:

    • Vowel and closure duration function as reliable, tempo-independent acoustic cues for the voiced-voiceless contrast in word-final positions.
    • The perception of this contrast can be influenced by speech rate and surrounding phonetic context.
    • These findings contribute to the understanding of phonetic cue weighting in speech perception.