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Related Experiment Video

Updated: Jul 12, 2025

Author Spotlight: Investigating the Impact of Emotional Prosodies on Voice Recognition and Perception
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Simultaneous relative cue reliance in speech-on-speech masking.

R A Lutfi1, M Zandona1, J Lee1

  • 1Auditory Behavioral Research Lab, Department of Communication Sciences and Disorders, University of South Florida, Tampa, Florida 33620, USA.

The Journal of the Acoustical Society of America
|October 23, 2023
PubMed
Summary

Listeners prioritize fundamental frequency and location over voice level when segregating simultaneous speech. This finding impacts how speech-on-speech masking is studied.

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Area of Science:

  • Auditory Perception
  • Psychoacoustics
  • Speech Processing

Background:

  • Listeners segregate simultaneous speech using fundamental frequency, level, and location cues.
  • Few studies examine simultaneous cue reliance or relative cue weighting in naturalistic listening.
  • Understanding cue reliance is crucial for interpreting speech-on-speech masking research.

Purpose of the Study:

  • To quantify simultaneous reliance on fundamental frequency, level, and location for speech segregation.
  • To compare listener reliance to an ideal observer model.
  • To evaluate the implications for speech-on-speech masking research methodologies.

Main Methods:

  • Trial-by-trial analysis of listener performance in a speech segregation task.
  • Presentation of simultaneous, naturally spoken sentence recordings with varying target talker cues.
  • Comparison of listener cue reliance against an ideal observer standard.

Main Results:

  • Only one of 33 normal-hearing adults predominantly used voice level.
  • Most listeners relied on voice fundamental frequency and/or location cues.
  • Significant individual variability exists in cue weighting for speech segregation.

Conclusions:

  • Listeners' speech segregation predominantly relies on fundamental frequency and location, not just level.
  • Current practices in speech-on-speech masking research may overemphasize level.
  • Further research should consider the complex interplay of multiple auditory cues in masking studies.