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• W4225326943 abstract "Full-rank spatial covariance analysis (FCA) is a blind source separation (BSS) method, and can be applied to underdetermined cases where the sources outnumber the microphones. This paper proposes a new extension of FCA, aiming to improve BSS performance for mixtures in which the length of reverberation exceeds the analysis frame. There has already been proposed a model that considers delayed source components as the exceeded parts. In contrast, our new extension models multiple time frames with multivariate Gaussian distributions of larger dimensionality than the existing FCA models. We derive an expectation-maximization algorithm to optimize the model parameters. Experiments to separate four speech sources with three microphones show that the proposed extension outperforms the existing models, and more specifically, the original FCA by around 2 dB measured with signal-to-distortion ratio." @default.
• W4225326943 created "2022-05-05" @default.
• W4225326943 creator A5007032557 @default.
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• W4225326943 date "2022-05-23" @default.
• W4225326943 modified "2023-10-16" @default.
• W4225326943 title "Multi-Frame Full-Rank Spatial Covariance Analysis for Underdetermined BSS in Reverberant Environments" @default.
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• W4225326943 doi "https://doi.org/10.1109/icassp43922.2022.9746723" @default.
• W4225326943 hasPublicationYear "2022" @default.
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