Method of noise reduction for an ADPCM signal

Details Method of noise reduction for an ADPCM signal Method of noise reduction for an ADPCM signal

1994-09-19

1997-11-11

Bocure, Tesfaldet

Pulse or digital communications

Pulse code modulation

Differential

341143, H04B 1406

Patent

active

056871899

ABSTRACT:
Noise in an ADPCM signal is muted or suppressed by modifying the magnitude of the ADPCM information during noisy conditions. In one method, the ADPCM data is changed to a predetermined magnitude value. In another method, the magnitude is reduced by a predetermined amount.

REFERENCES:
patent: 4513426 (1985-04-01), Jayant
patent: 4858163 (1989-08-01), Boreland
patent: 4926355 (1990-05-01), Boreland
patent: 4955037 (1990-09-01), Anderson et al.
patent: 5319573 (1994-06-01), Corleto et al.
Fukasawa et al, "Speech Coding Scheme for Personal Communications Under Radio Interference Noises" IEEE Vehicular Tech, 1994 Conf. pp. 1724-1727.
PIMRC '93, Fourth International Symposium on Personal Indoor, and Mobile Radio Communications, Pacifico Yokohama, Yokohama, Japan, Sep. 8-11, 1993.
"General Aspects of Digital Transmission Systems; Terminal Equipments," International Telecommunication Union CCITT, vol. III, Fascicle III.4, IXth Plenary Assembly, Melbourne, 14-25 Nov. 1988.

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