The auditory periphery can be simulated as filtering, inner-hair-cell rectification, and adaptation loops
Evidence
The monaural front end was (i) a first-order band-pass filter with cut-off frequencies of 0.5 and 5.3 kHz to simulate the filtering of the outer and middle ear, (ii) a bank with fourth-order gammatone filters (centre frequencies 313–1055 Hz) with a bandwidth of one equivalent rectangular bandwidth (ERB) and a spectral distance of adjacent filters of one ERB, (iii) white noise with a level of 7 dB SPL added to the output of each filter to simulate thresholds in quiet, (iv) half-wave rectification and a first order low-pass filter with a cut-off frequency of 1 kHz and (v) five consecutive adaptation loops to model adaptation and compression effects in the auditory system. … In the monaural pathway the output of the adaptation loops was analysed by a modulation filterbank, where the highest centre frequency of the modulation filters was restricted to a quarter of the centre frequency of the auditory filter. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3478
Categorization
Category: Factual Claims
- DEFINE: Lays out the standard computational front-end stages used to model the auditory periphery.
Related
- The envelope of each auditory filter output is processed by a modulation filterbank (similarity 0.85)
- Computational simulation can generate testable hypotheses about auditory physiology (similarity 0.81)
- Adaptation, temporal integration, and post-masking can be simulated in a single auditory element. (similarity 0.80)
- The auditory system acts as a band-pass filter at each signal frequency. (similarity 0.80)
- The inner ear can be modeled as an array of asymmetrical overlapping bandpass filters. (similarity 0.79)
- Middle ear acts as a band-pass filter attenuating 6 dB per octave (similarity 0.79)
- Auditory feedback amplification occurs at hair cells, not in the brain (similarity 0.78)
- Computational simulation is the best method to model the auditory system’s function (similarity 0.78)
- Hearing is a staged chain from air capture through mechanical conduction to neural processing (similarity 0.78)