桂林电子科技大学学报Issue(3)：232-236,5.
基于小波变换的新阈值函数语音去噪方法
A new threshold function speech denoising method based on wavelet transform
摘要
Abstract
In view of the discontinuity of hard threshold function and the constant bias in soft threshold function,a new threshold function based on two improved threshold functions is constructed,and a new function speech denoising method based on wavelet transform is proposed.Hard threshold processing method,soft threshold processing method and the new threshold processing method are used for the system signal and pure speech signal denoising simulation experiment.The ex-perimental results show that the new threshold denoising method can reduce signal distortion,make the reconstructed signal approximation to the original signal,and achieve good denoising effect.It is better than the traditional method in superiority and effectiveness.关键词
小波变换/语音信号/阈值去噪/阈值函数/信噪比Key words
wavelet transform/speech signal/threshold denoising/threshold function/SNR分类
信息技术与安全科学引用本文复制引用
刘继锦,周萍,杨青,景新幸..基于小波变换的新阈值函数语音去噪方法[J].桂林电子科技大学学报,2015,(3):232-236,5.基金项目
国家自然科学基金(61462017) （61462017）
广西自然科学基金(2012GXNSFAA053221,2014GXNSFAA118353) （2012GXNSFAA053221,2014GXNSFAA118353）
广西教育厅科研项目(2013YB083) （2013YB083）
