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Suggested formulae for calculating auditory-filter bandwidths and excitation patterns
The Journal of the Acoustical Society of America
|September 1, 1983
Summary
New research provides a simple formula for auditory filter bandwidth (ERB) based on center frequency. This formula accurately models how auditory filter bandwidth changes with frequency, aiding in auditory excitation pattern calculations.
Area of Science:
- Auditory Neuroscience
- Psychoacoustics
- Signal Processing
Background:
- Understanding auditory filter shape is crucial for modeling human hearing.
- Previous models may not fully capture the relationship between auditory filter bandwidth and center frequency across all ranges.
Purpose of the Study:
- To derive a simple, accurate formula for auditory filter bandwidth (ERB) as a function of center frequency.
- To provide a formula relating equivalent rectangular bandwidth rate to frequency.
- To describe a method for calculating auditory excitation patterns.
Main Methods:
- Utilizing recent estimates of auditory-filter shape.
- Deriving a mathematical formula relating ERB to center frequency.
- Developing a method for excitation pattern calculation based on derived filter shapes.
Main Results:
- A simple formula relating equivalent rectangular bandwidth (ERB) to center frequency was derived.
- Auditory filter bandwidth was shown to decrease below 500 Hz center frequency.
- A formula for ERB-rate as a function of frequency was established.
Conclusions:
- The derived formula offers a straightforward way to estimate auditory filter bandwidth across frequencies.
- The findings contribute to a better understanding of auditory processing and excitation patterns.
- This work facilitates more accurate modeling of auditory perception.