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Related Experiment Video

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Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
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Streaming and sound localization with a preceding distractor.

Norbert Kopčo1, Gabriela Andrejková1, Virginia Best2

  • 1Institute of Computer Science, Faculty of Science, P. J. Šafárik University, Jesenná 5, 04001 Košice, Slovakia.

The Journal of the Acoustical Society of America
|May 4, 2017
PubMed
Summary
This summary is machine-generated.

Perceptual organization influences auditory localization. Grouping a distractor with a target click, versus streaming it separately, differently impacts sound localization accuracy and bias.

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Area of Science:

  • Auditory perception
  • Acoustic signal processing
  • Psychoacoustics

Background:

  • Previous research demonstrated that a 2-ms click target's localization is affected by an identical distractor at inter-click intervals up to 400 ms.
  • The role of perceptual organization in this auditory localization effect remained unclear.

Purpose of the Study:

  • To investigate whether perceptual organization, specifically auditory grouping and streaming, influences the effect of a preceding distractor on sound localization.
  • To determine if different distractor types (grouped vs. streamed) yield different effects on localization bias and variance.

Main Methods:

  • Two experiments were conducted using a 2-ms click target.
  • Distractors were manipulated to either group with the target (single-click distractor) or stream separately (8-click train).
  • Localization performance, including bias and variance, was measured for each distractor condition.

Main Results:

  • The single-click distractor and the 8-click train distractor produced different effects on localization performance.
  • Differences were observed in both the bias (systematic error) and variance (random error) of localization.
  • This suggests that how the auditory system organizes the distractor relative to the target is critical.

Conclusions:

  • Perceptual organization, through auditory grouping and streaming, significantly plays a role in sound localization in complex auditory environments.
  • The way a distractor is processed (grouped or streamed) differentially impacts the accuracy and reliability of auditory target localization.
  • These findings advance our understanding of auditory scene analysis and spatial hearing.