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Communication Dans Un Congrès Année : 2009

Modeling the short time fourier transform ratio and application to underdetermined audio source separation

Résumé

This paper presents the theoretical background for the Model Based Underdetermined Source Separation presented in [5]. We show that for a given frequency band, in contrast to customary assumption, the observed Short-Time Fourier Transform (STFT) ratio coming from one source is not constant in time, but is a random variable whose distribution we have obtained. Using this distribution and the Time-Frequency (TF) "disjoint" assumption of sources, we are able to obtain promising results in separating four audio sources from two microphones in a real reverberant room.

Dates et versions

hal-00371282 , version 1 (27-03-2009)

Identifiants

Citer

Dinh-Tuan Pham, Zaher El Chami, Alexandre Guérin, Christine Serviere. Modeling the short time fourier transform ratio and application to underdetermined audio source separation. ICA 2009 - 8th International Conference on Independent Component Analysis and Signal Separation, Mar 2009, Paraty, Brazil. pp.98-105, ⟨10.1007/978-3-642-00599-2_13⟩. ⟨hal-00371282⟩
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