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• W1570863670 abstract "Sparse representations have proved a very useful tool in a variety of domain, e.g. speech/music source separation. As strictly sparse representations (in the sense of l0) are often impossible to achieve, other ways of studying signals sparsity have been proposed. In this paper, we revisit the irrelevance filtering analysis-synthesis approach proposed in (Balazs et al., IEEE Trans. ASLP, 18(1), 2010), where the TF coefficients that are below some masking threshold are set to zero. Instead of using the Gabor transform and a specific psychoacoustic model, we use tools directly inspired from perceptual audio coding, for instance MPEG-AAC. We show that significantly better performances are obtained on music signals, at lower computational cost. We then apply the sparsification process to the informed source separation (ISS) problem and show that it enables to significantly decrease the computational cost at the ISS decoder." @default.
• W1570863670 created "2016-06-24" @default.
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• W1570863670 date "2011-07-22" @default.
• W1570863670 modified "2023-10-16" @default.
• W1570863670 title "Sparsification of audio signals using the MDCT/IntMDCT and a psychoacoustic model - Application to informed audio source separation" @default.
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