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Simple triangular approximations of auditory filter shapes.

C Formby1

  • 1Department of Communicative Disorders, University of Florida.

Journal of Speech and Hearing Research
|September 1, 1990
PubMed
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A simplified triangular auditory filter model offers clinically useful frequency selectivity estimates. This method is less complex than the roex model, especially at high sound-pressure levels (SPLs).

Area of Science:

  • Auditory Perception
  • Psychoacoustics
  • Hearing Science

Background:

  • The roex filter model, while popular, presents complexities and limitations at high sound-pressure levels (SPLs) for clinical frequency selectivity measurements.
  • Existing auditory filter shape models may hinder clinical applications due to computational complexity and violated assumptions at high SPLs.

Purpose of the Study:

  • To introduce a simplified, clinically applicable method for estimating auditory filter shapes using a triangular filter model.
  • To provide a less complex alternative to the roex model for assessing frequency selectivity in clinical settings.

Main Methods:

  • Review of basic concepts in auditory filter shape estimation.
  • Description of methods for measuring and fitting a triangular-shaped auditory filter model.

Related Experiment Videos

  • Comparison of normative triangular filter shapes with other fitting methods and application to hearing-impaired patients.

    • Main Results:

    • The triangular filter model provides adequate and clinically useful estimates of auditory filter shapes.
    • This model retains qualitative advantages of the roex model while simplifying calculations.
    • The triangular model is suitable for moderately intense and high SPLs, offering a practical clinical compromise.

    Conclusions:

    • A triangular-shaped auditory filter model presents a viable and simplified approach for clinical frequency selectivity assessment.
    • This model offers a satisfactory compromise for clinicians dealing with moderately intense and high sound-pressure levels.
    • The simplified calculations and assumptions make the triangular model more accessible for clinical use compared to the roex model.