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Evaluation of a Protocol for Integrated Speech Audiometry.

Jerry Punch1, Brad Rakerd1

  • 1Department of Communicative Sciences & Disorders, Michigan State University, East Lansing.

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|December 12, 2018
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Summary
This summary is machine-generated.

This study found that using spondee words for speech loudness measurements, including the most comfortable level (MCL) and uncomfortable level (UCL), is reliable, valid, and clinically efficient when combined with the speech recognition threshold (SRT). Single spondees offered the best efficiency.

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Area of Science:

  • Audiology
  • Speech-Language Pathology
  • Hearing Science

Background:

  • Accurate measurement of speech loudness levels is crucial for hearing aid fitting and auditory rehabilitation.
  • Existing protocols for measuring the most comfortable level (MCL) and uncomfortable level (UCL) for speech may vary in efficiency and validity.
  • The use of spondee words in these measurements requires further evaluation for clinical utility.

Purpose of the Study:

  • To evaluate the reliability, validity, and clinical utility of a protocol for integrated speech MCL and UCL measurements.
  • To assess the validity of using spondee words for speech MCL and UCL measurements.
  • To compare the efficiency of different spondee presentation formats (singlets, triplets) and connected discourse.

Main Methods:

  • A randomized block design study with 36 normal-hearing participants (aged 18-29 years) divided into three groups.
  • Stimulus conditions included spondee singlets, spondee triplets, and connected discourse.
  • A modified method of limits was used to establish ascending/descending MCL and ascending UCL on a 7-point loudness scale, following SRT measurement. Test times were recorded.

Main Results:

  • No statistically significant or clinically relevant differences in mean SRTs, MCLs, or UCLs were found across the three stimulus groups (mean differences < 5 dB).
  • Excellent intrasession and intersession reliability was observed for all measures, with timely completion of testing.
  • A follow-up experiment indicated significantly higher MCLs and UCLs in older adults compared to younger adults.

Conclusions:

  • Spondee words are suitable for routine, reliable, valid, and clinically efficient measurement of speech MCL and UCL when integrated with SRT.
  • Spondee singlets provide the highest overall efficiency.
  • Recommendations include obtaining an ascending MCL before a descending MCL and averaging both values for the final MCL.