A speech enhancement algorithm based on non-linear filtering and noise masking

被引:0
作者
Zhang, JJ [1 ]
Cao, ZG [1 ]
机构
[1] Tsing Hua Univ, Dept Elect Engn, State Key Lab Microwave & Digital Commun, Beijing 100084, Peoples R China
来源
CHINESE JOURNAL OF ELECTRONICS | 2000年 / 9卷 / 03期
关键词
speech enhancement; noise suppression; masking; non-linear filtering;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper a concise form of noise masking is brought forward to serve as the speech enhancement criterion, which is used to estimate the parameter of a non-linear filter adaptively. With this parameter-adaptive non-linear filter, a computation-efficient speech enhancement algorithm is proposed. The efficiency comes from the coarse estimation of short-time power spectra and simplified calculation of masking threshold of speech. Finally the proposed algorithm is simulated and compared with the generalized spectral subtraction method and minimum mean-square error log-spectral amplitude estimation method for various noise types and levels with both Chinese and English speech segments. Objective measures and informal subjective listening tests show that the speech enhanced with the proposed algorithm has least audible residual noise.
引用
收藏
页码:296 / 300
页数:5
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