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This paper derives explicit expressions of the probability density functions of the two-channel post-filter estimators in isotropic noise fields to study their statistical properties. According to the analysis results, three methods are proposed to improve the performance of the noise filed coherence (NFC)-based post-filter estimator.
Audio, Speech, and Language Processing, IEEE Transactions on (Volume:21 , Issue: 2 )
Date of Publication: Feb. 2013