Skip to Main content Skip to Navigation
Conference papers

Spatial covariance models for under-determined reverberant audio source separation

Ngoc Duong 1 Emmanuel Vincent 1 Rémi Gribonval 1
1 METISS - Speech and sound data modeling and processing
IRISA - Institut de Recherche en Informatique et Systèmes Aléatoires, Inria Rennes – Bretagne Atlantique
Abstract : The separation of under-determined convolutive audio mixtures is generally addressed in the time-frequency domain where the sources exhibit little overlap. Most previous approaches rely on the approximation of the mixing process by complex-valued multiplication in each frequency bin. This is equivalent to assuming that the spatial covariance matrix of each source, that is the covariance of its contribution to all mixture channels, has rank 1. In this paper, we propose to represent each source via a full-rank spatial covariance matrix instead, which better approximates reverberation. We also investigate a possible parameterization of this matrix stemming from the theory of statistical room acoustics. We illustrate the potential of the proposed approach over a stereo reverberant speech mixture.
Complete list of metadatas

Cited literature [9 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00481529
Contributor : Emmanuel Vincent <>
Submitted on : Thursday, May 6, 2010 - 5:30:08 PM
Last modification on : Thursday, March 21, 2019 - 2:20:42 PM
Document(s) archivé(s) le : Thursday, September 16, 2010 - 1:44:27 PM

File

2009_WASPAA_DuongEtAl_SpatialC...
Publisher files allowed on an open archive

Identifiers

Citation

Ngoc Duong, Emmanuel Vincent, Rémi Gribonval. Spatial covariance models for under-determined reverberant audio source separation. IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, 2009. WASPAA '09., Oct 2009, New Paltz, United States. pp. 129 - 132, ⟨10.1109/ASPAA.2009.5346503⟩. ⟨hal-00481529⟩

Share

Metrics

Record views

702

Files downloads

671