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Communication Dans Un Congrès Année : 2010

Informed source separation of underdetermined instantaneous stereo mixtures using source index embedding

Résumé

In this paper, we address the issue of under-determined source separation of non-stationary audio sources from a stereo (i.e. 2-channel) linear instantaneous mixture. This problem is addressed with a specific coder-decoder configuration. At the coder, source signals are assumed to be available before the mixing is processed. A time-frequency (TF) analysis of each source enables to select the one or two predominant sources (among I>2) in each TF region, and a corresponding source(s) index code is imperceptibly embedded into the mix signals using a watermarking technique. At the decoder level, where the original sources signals are unknown, the extraction of the watermark enables to locally reduce the under-determined configuration to an (over)determined configuration. Sources signals can then be estimated using a classical (over)determined separation technique. Thereby several instruments or voice signals can be separated from stereo mixtures, enabling separate manipulation of the source signals during restitution (i.e. remastering).
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Dates et versions

hal-00486804 , version 1 (26-05-2010)

Identifiants

  • HAL Id : hal-00486804 , version 1

Citer

Mathieu Parvaix, Laurent Girin. Informed source separation of underdetermined instantaneous stereo mixtures using source index embedding. ICASSP 2010 - IEEE International Conference on Acoustics, Speech and Signal Processing, Mar 2010, Dallas, United States. pp.245-248. ⟨hal-00486804⟩
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