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The computational auditory signal processing and perception model: A revised version.

Lily Cassandra Paulick1, Helia Relaño-Iborra1, Torsten Dau1

  • 1Hearing Systems, Department of Health Technology Technical University of Denmark Kongens Lyngby 2800, Denmark.

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Summary
This summary is machine-generated.

A new computational auditory model incorporates non-linear inner hair cell (IHC) function, improving simulations of hearing across various sound levels. This enhanced auditory model accurately predicts human perception, aiding research into hearing loss.

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Area of Science:

  • Auditory Neuroscience
  • Computational Auditory Modeling
  • Psychoacoustics

Background:

  • Existing computational auditory models often lack detailed representation of inner hair cell (IHC) transduction saturation.
  • This limitation affects the accuracy of auditory perception simulations at high sound pressure levels.

Purpose of the Study:

  • To integrate a non-linear IHC model into the Computational Auditory Signal Processing and Perception (CASP) model.
  • To enhance the CASP model's ability to simulate auditory processing and perception, especially concerning non-linear effects.

Main Methods:

  • Incorporation of a non-linear IHC transduction model into the existing CASP framework.
  • Refinement of model parameters to accommodate the new non-linearity and improve usability.
  • Validation against psychoacoustic data including intensity discrimination, masking, and modulation detection.

Main Results:

  • The revised CASP model accurately predicts performance across various auditory tasks for normal-hearing listeners.
  • The model effectively captures the impact of compressive non-linearity in the IHC transduction process.
  • The updated model demonstrates improved predictive power and usability for auditory simulations.

Conclusions:

  • The revised CASP model provides a more accurate and intuitive framework for simulating auditory perception.
  • This enhanced model is valuable for investigating the role of non-linear auditory properties in internal representations.
  • The model can be applied to study the effects of sensorineural hearing loss on auditory perception.