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Related Experiment Videos

Perception-Production Links in Children's Speech.

Joanna H Lowenstein1, Susan Nittrouer1

  • 1Department of Speech, Language, and Hearing Sciences, University of Florida, Gainesville.

Journal of Speech, Language, and Hearing Research : JSLHR
|April 16, 2019
PubMed
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Speech signal quality significantly impacts children's speech production. Degraded auditory input, like that experienced by children with hearing loss, can explain some of their speech production challenges.

Area of Science:

  • Child phonology
  • Auditory perception
  • Speech production

Background:

  • Children with sensorineural hearing loss often exhibit altered speech production.
  • The role of signal degradation in these differences is not fully understood.

Purpose of the Study:

  • To investigate how degraded speech input affects the speech production of young children.
  • To determine if signal degradation explains speech differences in children with hearing loss.

Main Methods:

  • Ten 5-year-olds with normal hearing imitated nonwords under normal and noise-vocoded conditions.
  • Measured voice onset time, fricative length, and spectral properties (fricative moments, vowel formants).

Main Results:

  • Signal degradation significantly affected spectral measures, particularly vowel production.

Related Experiment Videos

  • Voice onset time changed for /d/, but voicing was preserved. Fricative duration was unaffected.

    • Conclusions:

    • Input signal quality constrains children's speech production abilities.
    • Degraded auditory signals contribute to speech production difficulties in children with hearing loss.
    • Speech perception and production experience also play a role.