Gammatone-based (auditory) spectrograms

Version 1.2.0.0 (143 ko) par Dan Ellis
Calculates a spectrogram-like time-frequency intensity matrix based on Gammatone filters.
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Mise à jour 12 mars 2009

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Gammatone filters are a popular linear approximation to the filtering performed by the ear. This routine provides a simple wrapper for generating time-frequency surfaces based on a gammatone analysis, which can be used as a replacement for a conventional spectrogram. It also provides a fast approximation to this surface based on weighting the output of a conventional FFT. The underlying Gammatone filters are taken (with permission) from Malcolm Slaney's Auditory Toolbox, http://cobweb.ecn.purdue.edu/~malcolm/interval/1998-010/ .

Citation pour cette source

Dan Ellis (2025). Gammatone-based (auditory) spectrograms (https://fr.mathworks.com/matlabcentral/fileexchange/23053-gammatone-based-auditory-spectrograms), MATLAB Central File Exchange. Extrait(e) le .

Compatibilité avec les versions de MATLAB
Créé avec R2006b
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gammatonegram/

Version Publié le Notes de version
1.2.0.0

- removed stray reference to local function (imgsc)
- use "figure" to avoid overwriting plot in demo script
1.1.0.0

"Fast" method now exactly models frequency response of classic filters; demo routine now includes plots to compare them.
1.0.0.0