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arXiv · 1512.02125

Joint Time-Frequency Scattering for Audio Classification

Joakim Andén·Vincent Lostanlen·Stéphane Mallat
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Abstract

We introduce the joint time-frequency scattering transform, a time shift invariant descriptor of time-frequency structure for audio classification. It is obtained by applying a two-dimensional wavelet transform in time and log-frequency to a time-frequency wavelet scalogram. We show that this descriptor successfully characterizes complex time-frequency phenomena such as time-varying filters and frequency modulated excitations. State-of-the-art results are achieved for signal reconstruction and phone segment classification on the TIMIT dataset.

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Joakim Andén, Vincent Lostanlen, Stéphane Mallat. 2015-12-07. Joint Time-Frequency Scattering for Audio Classification. https://doi.org/10.1109/mlsp.2015.7324385

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