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%0 Conference Proceedings
%A Liuni, Marco
%A Balazs, Peter
%A Roebel, Axel
%T SOUND ANALYSIS AND SYNTHESIS ADAPTIVE IN TIME AND TWO FREQUENCY BANDS
%D 2011
%B DAFx
%C Paris
%F Liuni11c
%X We present an algorithm for sound analysis and resynthesis with local automatic adaptation of time-frequency resolution. There exists several algorithms allowing to adapt the analysis window depending on its time or frequency location; in what follows we propose a method which select the optimal resolution depending on both time and frequency. We consider an approach that we denote as analysis-weighting, from the point of view of Gabor frame theory. We analyze in particular the case of different adaptive time-varying resolutions within two complementary frequency bands; this is a typical case where perfect signal reconstruction cannot in general be achieved with fast algorithms, causing a certain error to be minimized. We provide examples of adaptive analyses of a music sound, and outline several possibilities that this work opens.
%1 6
%2 3
%U http://articles.ircam.fr/textes/Liuni11c/