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Assessing auditory distance perception using virtual acoustics.

Pavel Zahorik1

  • 1Waisman Center, University of Wisconsin-Madison, 53705, USA. zahorik@waisman.wisc.edu

The Journal of the Acoustical Society of America
|May 11, 2002
PubMed
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Listeners underestimate sound source distance, but flexibly weight acoustic cues like intensity and reverberation. This perceptual weighting adapts to sound source type and position for stable distance estimation.

Area of Science:

  • Auditory perception
  • Acoustics
  • Psychoacoustics

Background:

  • Sound source distance influences multiple acoustic properties reaching the listener.
  • Perceptual systems integrate various acoustic cues for stable distance localization.
  • Confounding factors from source and environment necessitate robust cue-weighting mechanisms.

Purpose of the Study:

  • To investigate the psychophysical cue-weighting process in sound source distance perception.
  • To precisely measure and control acoustic cues using virtual acoustics in a large-room environment.
  • To determine how listeners weigh intensity and direct-to-reverberant energy ratio for distance estimation.

Main Methods:

  • Utilized a virtual acoustics method for controlled manipulation of acoustic cues.

Related Experiment Videos

  • Employed psychophysical testing to gather listener judgments of sound source distance.
  • Varied sound source type (noise, speech) and angular position (0°, 90°).
  • Main Results:

    • Listeners consistently underestimated true sound source distance exponentially.
    • Perceptual weight of intensity and direct-to-reverberant energy ratio varied significantly.
    • Cue weighting differed based on sound source type and listener's angular position.

    Conclusions:

    • The auditory system employs a flexible cue-weighting strategy for distance perception.
    • Perceptual weighting adapts to variations in source properties and environmental acoustics.
    • This adaptive process contributes to stable sound source distance estimates despite environmental complexities.