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Distorted Speech Rejection For Automatic Speech Recognition under CDMA Wireless Communication  

Kim Nam Soo (서울대학교 전기컴퓨터공학부)
Chang Joon-Hyuk (캘리포니아 주립대학 산타바바라)
Publication Information
The Journal of the Acoustical Society of Korea / v.23, no.8, 2004 , pp. 597-601 More about this Journal
Abstract
This paper introduces a pre-rejection technique for wireless channel distorted speech with application to automatic speech recognition (ASR) Based on analysis of distorted speech signals over a wireless communication channel. we propose a method to reject the channel distorted speech with a small computational load. From a number of simulation results. we can discover that tile pre-rejection algorithm enhances the robustness of speech recognition operation.
Keywords
Pre-rejection; Automatic Speech recognition; Quasi-stationarity; CDMA;
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1 M. Weintraub, 'LVCSR log-likelihood ratio scoring for keyWord spotting,' Proc. of IEEE Int. Conf. Acoust., Speech, Signal Processing, pp.297-300, 1995
2 A. M. Kondol, Digital speech : coding for low bit-rate communications systems (John Wiley & Sons, 1994)
3 Y. Okumura, E. Ohmori, T. Kawano and K. Fukuda, 'Field strength and its variability in VHF and UHF land-mobile radio service,' Review of the Electrical Commnuication Laboratory, Vol. 16(9-10), Sep.-Oct. 1968
4 J. -H. Chang and N. S. Kim, 'Speech enhancement : new approaches to soft decision,' IEICE Trans. Inf, and Syst., 27, E84-D, pp. 1231-1240, Sep. 2001
5 L. R. Rabiner and B. H. Juang, Fundamentals of Speech Recognition (Prentice Hall, Englewood Cliffs, NJ, 1993)
6 TINlS-893, Version 4.3 of the SMV algorithm description text (3GPP2, 2001)
7 R. C. Rose. 'Discriminant wordspotting techniques for rejecting non-vocabulary utterances in unconstrained speech', Proc. of IEEE Int. Conf. Acoust., Speech, Signal Processing, pp. 105-108, 1992
8 H. L. Bertoni, Radio propagation for modern wireless systems (Prentice Hall, 2000)