Frequency domain multi-channel speech separation and its applications

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A multi-channel speech separation method for real environments is proposed. The proposed method is based on frequency assignment, namely the magnitude of each channel at the same frequency bin is compared with each other and it is assigned to the channel, to which it originally belongs. This method is a direct consequence of frequency domain interpretation of the eigendecomposition method proposed by Cao et al., (1997). Furthermore, our proposed method does not require eigendecomposition, which consumes the costs of computation. We also present two example applications of the proposed method, that is, voice controlled computers in a multiuser environment and a noise removal in cellular telephony using two microphones.

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