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Synthèse et implémentation de filtres à bande passante variable à faible complexité à l’aide des bancs de filtres

Abstract : The paper introduces an innovative method for variable passband filters synthesis using filters banks. This technique allows a fast filter passband modification with a low complexity implementation. This method, called Rcos, has been designed by deeply analysing the DFT (Discrete Fourier Transform) method, and the OLS (Overlap Save) method. By introducing an appropriate weighting during the selection of the elementary frequency bands which belong to the desired filter, it is possible to reduce the aliasing effect due to the time varying behavior of the filter, and to obtain a simple and efficient method which has a lower complexity than that of OLS. The paper’s contribution is the analysis, the development and the comparison between the different methods.
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https://hal.univ-brest.fr/hal-03222763
Contributor : Gilles Burel Connect in order to contact the contributor
Submitted on : Monday, May 10, 2021 - 2:42:28 PM
Last modification on : Monday, October 11, 2021 - 2:22:09 PM

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  • HAL Id : hal-03222763, version 1

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Arnaud Le Pladec, Gilles Burel, Christian Jacquemont. Synthèse et implémentation de filtres à bande passante variable à faible complexité à l’aide des bancs de filtres. Traitement du Signal, Lavoisier, 2002, 19 (3), pp.217-233. ⟨hal-03222763⟩

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