11th Annual Conference of the International Speech Communication Association

Makuhari, Chiba, Japan
September 26-30. 2010

Masking Property Based Microphone Array Post-Filter Design

Ning Cheng, Wenju Liu, Lan Wang

Chinese Academy of Sciences, China

This paper presents a novel post-filter for noise reduction. A subspace based noise estimation method is developed with the use of multiple statistical distributions to model the speech and noise. The signal-plus-noise subspace dimension is determined by maximizing the target speech presence probability in noisy frames, so as to estimate the noise power spectrum for post-filter design. Then, masking property is incorporated in the post-filter technique for residual noise shaping. Experimental results show that the proposed scheme outperforms the baseline systems in terms of various quality measurements of the enhanced speech.

Full Paper

Bibliographic reference.  Cheng, Ning / Liu, Wenju / Wang, Lan (2010): "Masking property based microphone array post-filter design", In INTERSPEECH-2010, 961-964.