Title :
Combination of feature weight and speech enhancement
Author :
Xu, Tao ; Cao, Zhigang
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
In this paper we propose a novel algorithm for feature weight and speech enhancement, in which every feature is weighted according to their credible probability, especially, the weight factors are formulated and obtained from the gain coefficients generated as a by-product of speech enhancement based on short-time spectrum amplitude (STSA) estimation. Moreover, this algorithm can be combined with the front-end speech enhancement itself. Experiments demonstrate that this algorithm affords significant performance improvements at low SNRs.
Keywords :
speech enhancement; speech recognition; gain coefficients; short-time spectrum amplitude; speech enhancement; weight factors; Automatic speech recognition; Digital communication; Feature extraction; Mel frequency cepstral coefficient; Microwave generation; Noise robustness; Performance gain; Signal to noise ratio; Speech enhancement; Speech recognition;
Conference_Titel :
TENCON '02. Proceedings. 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering
Print_ISBN :
0-7803-7490-8
DOI :
10.1109/TENCON.2002.1181308