AN ADAPTIVE MULTIRESOLUTION SPEECH ENHANCEMENT ALGORITHM BASED ON WAVELET TRANSFORM
Zheng Yuanjin①; Li Lemin①; Wen Maosheng②
①National Key Lab. of Optical Fiber Comm., University of Electron. Science and Tech. of China Chengdu 610054;②Inform. and Comm. Department Xi an Jiaotong University Xi'an 710049
Abstract In this paper, an adaptive multiresolution speech enhancement algorithm based on wavelet transform is put forward. It can make adaptive filtering to noise speech both at scales and among scales. So that the noise parts during the frequency intervals which decrease hearing quality mostly are reduced efficiently. Both the SNR and subject hearing quality of denoised speech are high and good.