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Determined Source Separation for Microphone Recordings Using IIR Filters

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A method for determined blind source separation for microphone recordings is presented which attenuates the direct path cross-talk using IIR filters. The unmixing filters are derived by approximating the transmission paths between the sources and the microphones by a delay and a gain factor. For the evaluation, the proposed method is compared to three other approaches. Degradation of the separation performances are caused by fractional delays and the directivity of microphones and sources, which are discussed here. Advantages are low latency, low computational complexity and high sound quality.

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AES - Audio Engineering Society