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Rapid estimation of high-parameter auditory-filter shapes.

Yi Shen1, Rajeswari Sivakumar1, Virginia M Richards1

  • 1Department of Cognitive Sciences, University of California, Irvine, 3151 Social Science Plaza, Irvine, California 92687-5100.

The Journal of the Acoustical Society of America
|October 18, 2014
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Summary
This summary is machine-generated.

The quick-auditory-filter (qAF) procedure efficiently estimates asymmetric auditory filter shapes using a Bayesian adaptive method. This novel approach provides reliable auditory filter estimates in under 200 trials.

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Area of Science:

  • Psychoacoustics
  • Auditory Perception
  • Signal Processing

Background:

  • Auditory filters shape sound perception.
  • Estimating auditory filter shapes is crucial for understanding hearing.
  • Existing methods can be time-consuming.

Purpose of the Study:

  • To introduce and validate the quick-auditory-filter (qAF) procedure for efficient auditory filter estimation.
  • To assess the qAF procedure's ability to estimate asymmetric auditory filter shapes.
  • To evaluate the reliability and speed of the qAF procedure.

Main Methods:

  • Employed a Bayesian adaptive procedure (qAF) to estimate auditory filter parameters.
  • Used a spectrally notched noise masker with adaptive manipulation of level and notch position.
  • Conducted three experiments with naive listeners detecting pure-tone targets.

Main Results:

  • The qAF procedure yielded convergent auditory-filter shape estimates at 2 kHz within 150-200 trials.
  • Demonstrated excellent test-retest reliability for most listeners.
  • Estimated asymmetric auditory filters consistent with established norms, particularly at lower target levels.
  • Replicated the finding of narrower filters for forward masking versus simultaneous masking due to peripheral suppression.

Conclusions:

  • The qAF procedure offers an efficient and reliable method for estimating auditory filter shapes, including asymmetric ones.
  • This method significantly reduces the number of trials needed compared to traditional approaches.
  • The findings support the qAF procedure's utility in psychoacoustic research and potentially clinical audiology.