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Related Experiment Videos

Speech recognition in multitalker babble using digits, words, and sentences.

Rachel A McArdle1, Richard H Wilson, Christopher A Burks

  • 1Bay Pines VA Healthcare System, Audiology (126), FL 33744, USA. Rachel.mcardle@med.va.gov

Journal of the American Academy of Audiology
|March 7, 2006
PubMed
Summary

Listeners with hearing loss show poorer speech recognition in noise compared to normal-hearing individuals. This study highlights differences in performance across various linguistic complexities, impacting hearing aid fitting and speech understanding.

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Area of Science:

  • Audiology
  • Speech-Language Pathology
  • Hearing Science

Background:

  • Speech recognition in noise is a critical measure of auditory function.
  • Understanding performance differences between normal-hearing and hearing-impaired listeners is essential for audiological assessment.
  • Linguistic complexity of auditory stimuli can influence speech recognition outcomes.

Purpose of the Study:

  • To compare speech recognition in multitalker babble between normal-hearing and hearing-impaired listeners.
  • To investigate the effect of linguistic complexity (digits, words, sentences) on recognition performance.
  • To correlate subjective speech recognition ratings with objective measures.

Main Methods:

  • Mixed model design with 36 normal-hearing and 72 hearing-impaired participants.

Related Experiment Videos

  • Speech recognition measured using digits, words, and sentences in multitalker babble at varying signal-to-babble ratios.
  • Objective measures (speech-to-babble ratio) and subjective questionnaire data were collected.

    • Main Results:

    • Normal-hearing listeners significantly outperformed hearing-impaired listeners across all linguistic materials.
    • An average 8 dB signal-to-babble ratio difference was observed between the groups.
    • Digits required a significantly lower signal-to-babble ratio for 50% recognition compared to words and sentences.

    Conclusions:

    • Hearing loss significantly impacts speech recognition in noise, with greater challenges observed for hearing-impaired individuals.
    • Linguistic complexity influences the difficulty of speech recognition tasks in noise.
    • Subjective and objective measures of speech recognition in noise show moderate correlations.