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Spectral content as a cue to perceived auditory distance.

A D Little1, D H Mershon, P H Cox

  • 1Department of Psychology, North Carolina State University, Raleigh 27695-7801.

Perception
|January 1, 1992
PubMed
Summary
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Spectral content changes in auditory stimuli can indicate sound source distance. This study found spectral information acts as a relative cue for perceived auditory distance, not an absolute one, independent of sound level.

Area of Science:

  • Acoustics
  • Psychoacoustics
  • Auditory Perception

Background:

  • Spectral content changes in auditory stimuli are proposed cues for sound source distance.
  • Previous research has not clarified if spectral cues are absolute or relative.
  • The influence of sound level and loudness changes requires evaluation.

Purpose of the Study:

  • To determine if spectral content provides an absolute or relative cue for auditory distance.
  • To assess the role of spectral changes in perceived sound source distance.
  • To evaluate confounding effects of sound level and loudness.

Main Methods:

  • Investigated wide-band auditory stimuli with varying spectral content.
  • Manipulated sound levels and loudness to isolate spectral cue effects.

Related Experiment Videos

  • Compared listener perception of auditory distance with controlled spectral variations.

    • Main Results:

    • A decrease in high-frequency content correlated with increased perceived auditory distance.
    • This effect was observed only when listeners could compare sounds with differing spectral content.
    • Spectral information functions as a relative cue for auditory distance.

    Conclusions:

    • Spectral content serves as a relative cue for perceived auditory distance.
    • The perception of distance using spectral cues is independent of overall sound level changes.
    • Listeners require comparative spectral information to judge auditory distance effectively.