ZENG Qingning1,2 OUYANG Shan2
(1 College of Telecommunications Engineering, Xidian University Xi'an 710071)
(2 School of Information and Communication, Guilin University of Electronic Technology Guilin 541004)
Received Dec. 4, 2006
Revised Oct. 30, 2007
Abstract Microphone array-based speech enhancement has great importance for speech communications and speech recognition. To reduce the aperture of the microphone array and to increase the effect of the speech enhancement will greatly broaden the application areas of the microphone array. An array crosstalk resistant adaptive noise cancellation method is therefore presented. And then an improved spectral subtraction algorithm is further cascaded to obtain better enhancement results. Theoretic analysis and experiments indicate that the proposed scheme needs only a very small microphone array while it simultaneously achieves a higher SNR improvement. Besides, the proposed scheme can be used in many noisy environments and is easy for real-time implementation.
PACS number: 43.60, 43.50
