An active audio matrix decoding method and apparatus to generate multi-channel audio signals from a stereo channel audio signal. The method includes extracting characteristics of a plurality of speaker signals and angles of each of a plurality of multi-channel speakers from arbitrary signals reproduced...http://www.google.fr/patents/US8111830?utm_source=gb-gplus-shareBrevet US8111830 - Method and apparatus to provide active audio matrix decoding based on the positions of speakers and a listener
Method and apparatus to provide active audio matrix decoding based on the ...