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Development of the Connected Speech Test (CST).

R M Cox1, G C Alexander, C Gilmore

  • 1Department of Audiology and Speech Pathology, Memphis State University, Tennessee.

Ear and Hearing
|October 1, 1987
PubMed
Summary
This summary is machine-generated.

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The Connected Speech Test (CST) assesses everyday speech intelligibility, crucial for evaluating hearing aid benefits. This initial phase details its development and scoring for hearing research.

Area of Science:

  • Audiology
  • Speech Science

Background:

  • Hearing aid benefit investigations require reliable speech intelligibility measures.
  • Existing tests may not fully capture real-world listening challenges.

Purpose of the Study:

  • To describe the initial development phase of the Connected Speech Test (CST).
  • To establish the CST as a criterion measure for hearing aid benefit studies.

Main Methods:

  • Development of 48 passages of conversationally produced connected speech.
  • Each passage contains 25 key words for scoring, with consistent intelligibility across passages.
  • Averaging scores from multiple passages to obtain a single intelligibility score.

Main Results:

  • The 95% critical difference for paired scores (4 passages each) is approximately 14 rationalized arcsine units (rau).

Related Experiment Videos

  • The performance-intensity function exhibits a slope of 12 rau/dB signal-to-babble ratio.

    • Conclusions:

    • The Connected Speech Test (CST) is a promising tool for assessing speech intelligibility.
    • Further investigations with hearing-impaired listeners are ongoing to validate its clinical utility.