Title :
A modified Subband post-filtering approach for MVDR beamformer
Author :
Yang, Yi ; Song, Hui ; Liu, Jia ; Bao, Xiuguo ; Yuan, Qingsheng
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
MVDR beamformer is a robust beamforming method to enhance a desired (speech) signal in the presence of stationary noise. This paper presents a modified Subband post-filtering approach for MVDR beamformer in microphone array system. The quality of the modified Subband post-filtering is studied in simulated rooms with different noise level and is compared to wiener post-filtering proposed in the literature. Experiments confirm the effectiveness of the proposed system.
Keywords :
Wiener filters; microphone arrays; speech enhancement; MVDR beamformer; Wiener post-filtering; microphone array system; modified subband post-filtering approach; speech signal enhancement; Array signal processing; Arrays; Microphones; Noise; Noise reduction; Speech; Speech enhancement; MVDR beamformer; Subband post-filtering; gain function; microphone array;
Conference_Titel :
Cognitive Informatics (ICCI), 2010 9th IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-8041-8
DOI :
10.1109/COGINF.2010.5599787
