Method for generating a multi-channel audio decoder matrix

Details Method for generating a multi-channel audio decoder matrix Method for generating a multi-channel audio decoder matrix

1994-06-21

1996-06-04

Rogers, Scott A.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Pseudo stereophonic

381 20, H04S 302

Patent

active

055240542

ABSTRACT:
In an MPEG multi-channel audio signal processor, a decoder requires a respective decoder matrix for determining different output channels from coded audio data. Some transmitted information indicates basic parameters of the multi-channel system. This information may be used to address a currently required decoder matrix which is stored in a decoder memory. The storage of a large number of such matrices would be required to enable the decoder to decode all possible channel configurations. Instead of addressing a required decoder matrix stored in decoder memory, initially the current encoder matrix is reconstructed in the decoder using the related transmitted information. The required decoder matrix is then computed from the reconstructed encoder matrix using a matrix inversion technique.

REFERENCES:
Von Warner et al., "Eine Neue Codiertechnik fur Surround-Stereo-Surround (4-2-4)," Rundfunktechniche Mitteilungen vol. 35, No. 1, Jan./Feb. 1991, Germany.
W. R. Th. ten Kate et al., "Matrixing of Bit Rate Reduced Audio Signals," ICASSP 92 IEEE International Conference on Acoustics, Speech and Signal Processing, vol. 2, Mar. 1992.
Suganami et al., "A sound Reproduction and Trasmission System for HDTV," HDTV 90 Fourth International Colloquium on Advanced Television Systems, Jun. 1990.
A Committee Draft of MPEG audio specification ISO/IEC 13818-3, pp. iv-ix and 26-28 describes aspects of the MPEG audio processing standard.

Affiliated with

Also associated with

Rating

Method for generating a multi-channel audio decoder matrix does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for generating a multi-channel audio decoder matrix, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for generating a multi-channel audio decoder matrix will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-390208