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Does Time Compression Decrease Intelligibility for Female Talkers More Than for Male Talkers?

Eric M Johnson1,2, Shae D Morgan1,3, Sarah Hargus Ferguson1

  • 1Department of Communication Sciences and Disorders, The University of Utah, Salt Lake City.

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Summary
This summary is machine-generated.

Time compression significantly reduced speech intelligibility, especially for female talkers. Larger talker vowel spaces and higher word frequencies lessened this negative effect, improving speech perception.

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Area of Science:

  • Speech perception research
  • Auditory processing
  • Acoustic phonetics

Background:

  • Speech intelligibility is crucial for effective communication.
  • Time compression, a method of speeding up speech, can impact intelligibility.
  • Previous research has not fully explored sex-based differences in time-compressed speech intelligibility.

Purpose of the Study:

  • To compare the effects of time compression on the intelligibility of male versus female talkers.
  • To investigate the influence of talker vowel space and word frequency on time compression's impact on intelligibility.

Main Methods:

  • Sentence materials from four talkers (two male, two female) were time-compressed.
  • Speech materials were presented in a 12-talker babble background to young adult listeners.
  • Generalized linear mixed-effects models analyzed keyword intelligibility based on processing condition and talker sex.

Main Results:

  • At normal speed, male and female talkers had similar intelligibility.
  • Time compression decreased intelligibility for all talkers, with a significantly greater effect on female talkers.
  • The negative impact of time compression was reduced by larger talker vowel spaces and higher word frequencies.

Conclusions:

  • While preliminary, findings suggest time compression affects female talkers' intelligibility more than male talkers'.
  • Talker vowel space and word frequency are key factors influencing speech intelligibility under time compression.
  • High-frequency words and talkers with larger vowel spaces are less susceptible to intelligibility degradation from time compression.