MULTI-MICROPHONE NOISE REDUCTION BY POST-FILTER AND SUPERDIRECTIVE BEAMFORMER

In this contribution a new noise reduction scheme for multi-microphone speech enhancement, called Adaptive Post-filter Extension for Superdirective beamformers (APES), will be introduced, The combination of the superdirective beamformer and the adaptive post-filter has a great potential to suppress diffuse noise. It also outperforms all related algorithms in terms of noise reduction, without increasing signal cancellation. Additionally, a new and easy-to-implement estimator of the post-filter transfer function will be given.

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