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arXiv · 1403.2180

Optimal Window and Lattice in Gabor Transform Application to Audio Analysis

Helene Lachambre·Benjamin Ricaud·Guillaume Stempfel·Bruno Torresani·Christoph Wiesmeyr·Darian M. Onchis
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Abstract

This article deals with the use of optimal lattice and optimal window in Discrete Gabor Transform computation. In the case of a generalized Gaussian window, extending earlier contributions, we introduce an additional local window adaptation technique for non-stationary signals. We illustrate our approach and the earlier one by addressing three time-frequency analysis problems to show the improvements achieved by the use of optimal lattice and window: close frequencies distinction, frequency estimation and SNR estimation. The results are presented, when possible, with real world audio signals.

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Helene Lachambre, Benjamin Ricaud, Guillaume Stempfel, Bruno Torresani, Christoph Wiesmeyr, Darian M. Onchis. 2014-03-10. Optimal Window and Lattice in Gabor Transform Application to Audio Analysis. https://arxiv.org/abs/1403.2180

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