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Features from normal and sensorineural listeners' nonsense syllable test errors

K J Doyle, J L Danhauer, B J Edgerton

    Ear and Hearing
    |May 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

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    This study analyzed speech sound errors in normal-hearing and hearing-impaired listeners using the Nonsense Syllable Test. Both groups used similar phonetic features like voicing and place of articulation when identifying initial consonants.

    Area of Science:

    • Audiology
    • Speech Science
    • Psychoacoustics

    Background:

    • Speech discrimination tests are crucial for assessing auditory function.
    • Understanding how hearing impairment affects speech sound perception is vital.
    • The Nonsense Syllable Test (NST) is a common tool for evaluating speech sound identification.

    Purpose of the Study:

    • To analyze consonant identification errors in normal-hearing and sensorineural hearing-impaired listeners.
    • To identify the phonetic features listeners rely on for consonant perception.
    • To investigate the influence of stimulus set composition on speech discrimination test results.

    Main Methods:

    • 18 listeners (10 normal-hearing, 8 hearing-impaired) participated.
    • Stimuli from the Nonsense Syllable Test (NST) were presented binaurally at varying sensation levels.

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  • Verbal responses were transcribed, converted to confusion matrices, and analyzed using multidimensional scaling.

    • Main Results:

    • Voicing, place of articulation, frication, and sibilancy were identified as key phonetic features for initial consonant perception in both listener groups.
    • Analysis revealed consistent patterns of feature utilization across different sensation levels.
    • Multidimensional scaling identified underlying perceptual dimensions used by listeners.

    Conclusions:

    • Both normal-hearing and sensorineural hearing-impaired listeners utilize similar phonetic features for consonant perception.
    • The findings highlight the importance of considering stimulus set characteristics when interpreting speech discrimination test outcomes.
    • Phonetic feature analysis provides valuable insights into speech sound processing in listeners with hearing loss.