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Related Concept Videos

Sound Intensity Level00:53

Sound Intensity Level

Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and hence a...

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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Performance-intensity functions for normal-hearing adults and children using computer-aided speech perception

Ryan McCreery1, Rindy Ito, Merry Spratford

  • 1Hearing and Amplification Research Laboratory, Boys Town National Research Hospital, Omaha, Nebraska, USA. mccreeryr@boystown.org

Ear and Hearing
|September 24, 2009
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Summary

Computer-Aided Speech Perception Assessment (CASPA) is feasible for children as young as 5 years. Phoneme scoring in CASPA minimizes age-related differences in speech recognition, making it a valuable tool for pediatric audiology.

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Published on: January 23, 2017

Area of Science:

  • Audiology
  • Speech-Language Pathology

Background:

  • The Computer-Aided Speech Perception Assessment (CASPA) is a clinical tool for assessing speech recognition using performance intensity (PI) functions.
  • CASPA was developed for adults, and its applicability to children has not been directly evaluated.

Purpose of the Study:

  • To evaluate the feasibility of obtaining PI functions in children using CASPA.
  • To compare speech recognition abilities across different age groups of children and adults using CASPA.
  • To determine the effectiveness of different scoring methods (words vs. phonemes) in CASPA for pediatric populations.

Main Methods:

  • Speech recognition was assessed using CASPA with 12 adults and 12 participants in each of four child age groups (5-6, 7-8, 9-10, 11-12 years).
  • All participants had normal hearing and age-appropriate speech production.
  • Results were scored by percentage of words correct and percentage of phonemes correct.

Main Results:

  • Significant differences in speech recognition were found across all age groups when scored by words correct.
  • When scored by phonemes correct, significant differences were only observed between adults and the two youngest child groups.
  • Speech recognition performance decreased with signal-to-noise ratio in both children and adults, with similar degradation magnitudes.

Conclusions:

  • CASPA is a feasible tool for obtaining PI functions in children as young as 5 years.
  • Phoneme scoring in CASPA may reduce the observed differences in speech recognition between children and adults.
  • Children's use of phonemic approximations for unfamiliar words may explain the benefits of phoneme scoring.