Title :
A new speech enhancement method
Author :
Linmei, Qin ; Guangrui, Hu ; Chongni, Li
Author_Institution :
Dept. of E.E., Shanghai Jiaotong Univ., China
Abstract :
The paper proposes a speech enhancement method in the wavelet domain, that is, using a soft thresholding to remove noise components from the wavelet coefficients of noisy speech. To prevent the quality degradation of the unvoiced sounds during the denoising process, we first separate unvoiced region from noisy speech and then apply the thresholding method in a different way from other regions. Simulation results demonstrate that the method has good performance. Considering the simplicity of the proposed algorithm, this method is proven to be very promising
Keywords :
interference suppression; speech enhancement; wavelet transforms; denoising process; noise component removal; noisy speech; quality degradation; soft thresholding; speech enhancement method; thresholding method; unvoiced region; unvoiced sounds; wavelet coefficients; wavelet domain; Acoustic noise; Continuous wavelet transforms; Discrete wavelet transforms; Frequency; Minimax techniques; Signal processing; Speech analysis; Speech enhancement; Speech processing; Wavelet transforms;
Conference_Titel :
Intelligent Multimedia, Video and Speech Processing, 2001. Proceedings of 2001 International Symposium on
Conference_Location :
Hong Kong
Print_ISBN :
962-85766-2-3
DOI :
10.1109/ISIMP.2001.925339
