Process and device for blind equalization of the effects of a tr

Details Process and device for blind equalization of the effects of a tr Process and device for blind equalization of the effects of a tr

1998-07-20

2000-12-05

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704234, G10L 2102

Patent

active

061579092

ABSTRACT:
A process and device for blind equalization of the effects of a transmission channel on a speech signal. The speech signal is transformed into cepstral vectors which are representative of the speech signal over a given horizon. A reference cepstrum consisting of a constant cepstrum signal representative of the long-term cepstrum of the speech signal is calculated for each cepstral vector. Each of the cepstral vectors is subjected to adaptive filtering by LMS on the basis of the reference cepstrum so as to generate a set of equalized cepstral vectors on the basis of the calculation of an error signal between the reference cepstrum and equalized cepstral vectors. The error signal is expressed as the difference between the reference cepstrum component of a given rank and the component of the same rank of the equalized cepstral vector.

REFERENCES:
patent: 5598505 (1997-01-01), Austin et al.
patent: 5905969 (1999-05-01), Mokbel et al.
Tokuda, K., Kobayashi, T., Shiomoto, S., Imai, S., "Adaptive Filtering Based On Cepstral Representation-Adaptive Cepstral Analysis Of Speech, " 1990 Int. Conf. on Acoust. Speech and Sig. Proc. 1990. ICASSP-90., pp.:377-380 vol. 1, Apr.1990.
French Preliminary Search Report dated Mar. 26, 1998, French Appl. No. FR 9709273.
Mokbel et al., "Deconvolution of Telephone Line Effects for Speech Recognition," Speech Communication, 19, pp. 185-196 (1996).
Benveniste et al., "Blind Equalizers," IEEE Transactions on Communications, vol. Com-32, No. 8, pp. 871-882 (Aug. 1994).
Hermansky et al., "Compensation for the Effect of the Communication Channel in Auditory-Like Analysis of Speech," (RASTA-PLP), Eurospeech, pp. 1367-2770 (1991).
Shynk, J., "Frequency-Domain and Multirate Adaptive Filtering," IEEE Signal Processing Magazine, pp. 14-37 (Jan. 1992).
Widrow et al., "Adaptive Noise Cancelling: Principles and Applications," Proc. of IEEE, vol. 63, No. 12, pp. 1692-1716 (Dec. 1975).

Affiliated with

Also associated with

Rating

Process and device for blind equalization of the effects of a tr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and device for blind equalization of the effects of a tr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device for blind equalization of the effects of a tr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-970114