Process and system of adaptive filtering by blind equalization o

Details Process and system of adaptive filtering by blind equalization o Process and system of adaptive filtering by blind equalization o

1995-07-12

1999-05-18

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704201, G10L3/02

Patent

active

059059699

ABSTRACT:
A process and a system for adaptive filtering of a digital telephone signal, in which the digital telephone signal is submitted to a frequency transformation and to a sub-band filtering in order to produce a plurality of sub-band signals. Each of the sub-band signals is submitted in turn to an adaptive filtering starting from a reference signal based on a long-term statistics regarding the telephone signal, equalization by blind deconvolution of the effects of the telephone transmission lines on the digital telephone signal thus being obtained.

REFERENCES:
patent: 4184129 (1980-01-01), Macchi Nee Danjon et al.
patent: 4227046 (1980-10-01), Nakajima et al.
patent: 4283601 (1981-08-01), Nakajima et al.
patent: 4319082 (1982-03-01), Gilloire et al.
patent: 5012519 (1991-04-01), Adlersberg et al.
patent: 5226085 (1993-07-01), Di Francesco
patent: 5248845 (1993-09-01), Massie et al.
patent: 5263033 (1993-11-01), Seshadri
patent: 5271088 (1993-12-01), Bahler
patent: 5283813 (1994-02-01), Shalvi et al.
patent: 5347541 (1994-09-01), Iltis et al.
patent: 5432818 (1995-07-01), Lou
patent: 5432859 (1995-07-01), Yang et al.
patent: 5524148 (1996-06-01), Allen et al.
patent: 5583963 (1996-12-01), Lozach
patent: 5706402 (1998-01-01), Bell
IEEE SP Magazine, Jan. 1992, pp. 15-37, "Frequency Domain and Multirate Adaptive Filtering", John Shynk.
On line Adaptation of a Speech Recognizer to Variations in Telephone Line Conditions, Mokbel et al, pp. 1247-1250.
"Adaptive Noise Cancelling: Principles and Applications", widrow et al, Proceedings of the IEEE, Vo. 63, No. 12, Dec. 1975.
"An Acoustic Canceller Using Subband Sampling and Decorrelation Methods", Yasukawa et al, IEEE Transactions on Signal Processing, vol. 41, No. 2, Feb. 1993.
Autoregressive Spectral Estimation in Noise with References to speech Analysis, Robert Preuss, Digital Signal Processing, Apr. 1991.
"Blind Equalizers", Benveniste et al, IEEE Transactions on Communications, vol. Com-32, #8, Aug. 1994.

Affiliated with

Also associated with

Rating

Process and system of adaptive filtering by blind equalization o 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 system of adaptive filtering by blind equalization o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and system of adaptive filtering by blind equalization o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1768999