TY - GEN
T1 - Gaussian modeling of mixtures of non-stationary signals in the time-frequency domain (HR-NMF)
AU - Badeau, Roland
PY - 2011/12/19
Y1 - 2011/12/19
N2 - Nonnegative Matrix Factorization (NMF) is a powerful tool for decomposing mixtures of non-stationary signals in the Time-Frequency (TF) domain. However, unlike the High Resolution (HR) methods dedicated to mixtures of exponentials, its spectral resolution is limited by that of the underlying TF representation. In this paper, we propose a unified probabilistic model called HR-NMF, that permits to overcome this limit by taking both phases and local correlations in each frequency band into account. This model is estimated with a recursive implementation of the EM algorithm, that is successfully applied to source separation and audio inpainting.
AB - Nonnegative Matrix Factorization (NMF) is a powerful tool for decomposing mixtures of non-stationary signals in the Time-Frequency (TF) domain. However, unlike the High Resolution (HR) methods dedicated to mixtures of exponentials, its spectral resolution is limited by that of the underlying TF representation. In this paper, we propose a unified probabilistic model called HR-NMF, that permits to overcome this limit by taking both phases and local correlations in each frequency band into account. This model is estimated with a recursive implementation of the EM algorithm, that is successfully applied to source separation and audio inpainting.
KW - Expectation-Maximization algorithm
KW - High Resolution methods
KW - Nonnegative Matrix Factorization
KW - audio inpainting
KW - source separation
U2 - 10.1109/ASPAA.2011.6082264
DO - 10.1109/ASPAA.2011.6082264
M3 - Conference contribution
AN - SCOPUS:83455221408
SN - 9781457706912
T3 - IEEE Workshop on Applications of Signal Processing to Audio and Acoustics
SP - 253
EP - 256
BT - 2011 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2011
T2 - 2011 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2011
Y2 - 16 October 2011 through 19 October 2011
ER -