multi-channel microphone array noise reduction
refer to
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J. Chen, J. Benesty and Y. Huang, "A Minimum Distortion Noise Reduction Algorithm With Multiple Microphones," in IEEE Transactions on Audio, Speech, and Language Processing
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J. Benesty, J. Chen, and Y. Huang, Microphone Array Signal Processing. Berlin, Germany: Springer-Verlag, 2008
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A distortionless subband beamformer for noise reduction in reverberant environments. Habets, Emanuël. (2010).
 
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