Spectral subtraction in the time-frequency domain using wavelet packets

被引：2
|
作者：
Bodin, P
Villemoes, LF
机构：
来源：
1997 IEEE WORKSHOP ON SPEECH CODING FOR TELECOMMUNICATIONS, PROCEEDINGS: BACK TO BASICS: ATTACKING FUNDAMENTAL PROBLEMS IN SPEECH CODING | 1997年
关键词：
D O I：
10.1109/SCFT.1997.623889
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This paper deals with the problem of enhancement of speech signals in slowly varying background noise. The method suggested uses the wavelet packet transform together with a simple statistical model of the noise. As in spectral subtraction, information about the background is collected during non-speech intervals. The signal estimate is obtained with spectral subtraction in the time-frequency domain and a rule for choosing the most favorable time-frequency decomposition is suggested. The method is demonstrated with a real-data example.
引用
收藏
页码：47 / 48
页数：2
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