Adaptive error control for ADPCM speech coders

Details Adaptive error control for ADPCM speech coders Adaptive error control for ADPCM speech coders

1993-11-02

1996-07-09

MacDonald, Allen R.

395 237, G10L 302, G10L 900

Patent

active

055352995

ABSTRACT:
Methods and apparatus for improving the perceived quality of ADPCM encoded signals by magnitude limiting samples of the ADPCM encoded signals prior to the decoding of samples of the ADPCM encoded signals, preferably, a sample of the ADPCM encoded signal is magnitude limited only if a receive error is detected for the sample.

REFERENCES:
patent: 4815137 (1989-03-01), Benvenuto
patent: 4989246 (1991-01-01), Wan et al.
patent: 5054073 (1991-10-01), Yazu
patent: 5289549 (1994-02-01), Rattey et al.
patent: 5347478 (1994-09-01), Suzuki et al.
David J. Goodman et al. in "Waveform Substitution Techniques for Recovering Missing Speech Segments in Packet Voice Communications", IEEE Transactions on Acoustics, Speech and Signal Processing, vol. ASSP-34, No. 6, Dec. 1986.
Kiyoshi Yokota, et al. in "A New Missing ATM Cell Reconstruction Scheme for ADPCM-Coded Speech", Proceedings of the International Conference of Acoustics, Speech, and Signal Processing 1989.
Cointot and G. de Passoz in "A 60-Channel PCM-ADPCM Converter Robust to Channel Errors", Proceedings of the International Conference of Acoustics, Speech, and Signal Processing 1982.
D. Kim and C. K. Un, "An ADPCM System with Improved Error Control", Proceedings of the International Conference of Acoustics, Speech, and Signal Processing 1983.
A Speech Processing LSI for ATM Network Subscriber Circuits Shoji et al. IEEE/May 1990.
A New Missing ATM Cell Reconstruction Scheme for ADPCM-Coded Speech Yokota et al IEEE 1982.
A New Speech Processing Scheme for ATM Switching Systems Suzuki et al IEEE/Jun. 1989.

Affiliated with

Also associated with

Rating

Adaptive error control for ADPCM speech coders does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive error control for ADPCM speech coders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive error control for ADPCM speech coders will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1874780