Title :
An approach of adaptive blocking matrix based on frequency domain independent component analysis in generalized sidelobe canceller
Author :
Li, Juan ; Fu, Qiang ; Yan, Yonghong
Author_Institution :
Think IT Speech Lab., Chinese Acad. of Sci., Beijing, China
Abstract :
In this paper, we propose a combined approach of generalized sidelobe cancelling and frequency domain independent component analysis (FD-ICA) for speech enhancement. In conventional generalized sidelobe canceller, the noise reference are often obtained by differencing between microphones, which always causes speech distortion due to leakage in reference signal. We replace the fixed blocking matrix with an adaptive one by applying the FD-ICA method, which can perform a steep null in target direction. Experiment in real environment presents that the enhanced speech obtained by our method has less speech distortion for better noise reference.
Keywords :
frequency-domain analysis; independent component analysis; matrix algebra; signal denoising; speech enhancement; FD-ICA approach; adaptive blocking matrix approach; fixed blocking matrix; frequency domain independent component analysis; generalized sidelobe canceller; noise reference; reference signal; speech distortion; speech enhancement; steep null; Array signal processing; Frequency domain analysis; Independent component analysis; Microphones; Noise; Speech; Speech enhancement; FD-ICA; adaptive blocking matrix; generalized sidelobe canceller; speech enhancement;
Conference_Titel :
Signal Processing (ICSP), 2010 IEEE 10th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5897-4
DOI :
10.1109/ICOSP.2010.5657217