Fenêtre et grille optimales pour la transformée de Gabor Exemples d'application à l'analyse audio

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: close frequencies distinction, frequency estimation and Signal to Noise Ratio estimation. The results are presented, when possible, with real world audio signals.
Liste complète des métadonnées

Cited literature [8 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01279441
Contributor : Bruno Torrésani <>
Submitted on : Monday, February 29, 2016 - 8:33:07 PM
Last modification on : Monday, March 4, 2019 - 2:04:19 PM
Document(s) archivé(s) le : Sunday, November 13, 2016 - 4:17:33 AM

File

lachambre70.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-01279441, version 1

Collections

Citation

Hélène Lachambre, Benjamin Ricaud, Guillaume Stempfel, Bruno Torresani, Christoph Wiesmeyr, et al.. Fenêtre et grille optimales pour la transformée de Gabor Exemples d'application à l'analyse audio. XXV-ième Colloque GRETSI, Sep 2015, Lyon, France. ⟨hal-01279441⟩

Share

Metrics

Record views

278

Files downloads

126