Wspólnotowy Serwis Informacyjny Badan i Rozwoju - CORDIS

Frequency-domain algorithms, software and demo for audio source separation

We have developed a method for blind separation of convolutive mixtures, which exploits the non stationarity of the source signals. The method works on in the frequency domain so that it can handle mixing filters with quite long impulse responses. It is thus quite suitable for the separation of audio mixtures, as such mixtures can result from filters with quite long impulse response in a reverberrant environment, and the audio signals are highly nonstationary. The principal difficulty in a frequency domain approach is the frequency permutation ambiguity problem. Novel methods have been developed to solve this problem.

Reported by

Institut National Polytechnique de Grenoble
Laboratoire de Modelisation et Calcul, BP 53, 38041 Grenoble cedex, France
38041 Grenoble
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