Matrix improvements to lossless encoding and decoding

Details Matrix improvements to lossless encoding and decoding Matrix improvements to lossless encoding and decoding

2007-03-20

2007-03-20

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

C341S051000

Reexamination Certificate

active

10913160

ABSTRACT:
A lossless encoder and decoder are provided for transmitting a multichannel signal on a medium such as DVD-Audio. The encoder accepts additionally a downmix specification and splits the encoded stream into two substreams, such that a two-channel decoder of meagre computational power can implement the downmix specification by decoding one substream, while a multichannel decoder can decode the original multichannel signal losslessly using both substreams. Further features provide for efficient implementation on 24-bit processors, for confirmation of lossless reproduction to the user, and for benign behaviour in the case of downmix specifications that result in overload. The principle is also extended to mixed-rate signals, where for example some input channels are sampled at 48 kHz and some are sampled at 96 kHz.

REFERENCES:
patent: 5396228 (1995-03-01), Garahi
patent: 5715187 (1998-02-01), Chen et al.
patent: 5731837 (1998-03-01), Hurst, Jr.
patent: 5839100 (1998-11-01), Wegener
patent: 5848106 (1998-12-01), Khayrallah
patent: 6023233 (2000-02-01), Craven et al.
patent: 6664913 (2003-12-01), Craven et al.
patent: 04113506 (1992-10-01), None
patent: 0631458 (1994-12-01), None
patent: 0631458 (1994-12-01), None
patent: 9637048 (1996-11-01), None
Adil Benyassine et al., “Multiband CELP Coding of Speech”, IEEE Proc. of the Asilomar Conference on Sig., Sys. and Computers, vol. CONF. 24, New York, Nov. 5, 1990.
Fuchs H., “Improving Joint Stereo Audio Coding by Adaptive Inter-Channel Prediction”, IEEE Workshop on Applications of Signal Proc. to Audio and Acoust., Oct. 17, 1993.
Bill Kath, “Gaussian Elimination with Row Exchanges (.partial pivoting)”: McCormick School of Engineering and Applied Science, Illinois, Course Material, no date.
J.R. Stuart, “A Proposal for the High-Quality Audio Application of High-Density CD Carriers”: Technical Subcommittee of Acoustic Renaissance for Audio, Jan. 1996.
Warner R. Th. Ten Kate, “Compatibility Matrixing of Multichannel Bit-Rate Reduced Audio Signals”, New York: J. of the Audio Eng. Soc., vol. 44, No. I2, no date.

Affiliated with

Also associated with

Rating

Matrix improvements to lossless encoding and decoding does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Matrix improvements to lossless encoding and decoding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Matrix improvements to lossless encoding and decoding will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3746639