Multi-channel transmitter/receiver system providing...

H - Electricity – 04 – S

Patent

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Details

H04S 3/02 (2006.01) H04H 5/00 (2006.01)

Patent

CA 2167523

The invention relates generally to transmitting and receiving multiple channels of information, particularly audio information which represents a multidimensional sound field. More particularly, the invention relates to devices and methods which provide signals that are compatible with multi-channel receivers and with matrix decoders such as the decode MP-Matrix used for many motion picture soundtracks. In a multi-channel transmitter, a network prepares intermediate signals which are encoded by signal analysis processors into a signal for subsequent transmission or storage. In a multi-channel receiver, information extracted from the received encoded signal is combined in a network and processed by signal synthesis processors to provide output signals which are compatible with a matrix decoder.

L'invention concerne d'une façon générale l'émission et la réception de canaux d'informations multiples et particulièrement d'informations audio qui représentent un champ sonore multidimensionnel. Elle concerne plus précisément des dispositifs et procédés donnant des signaux compatibles avec des récepteurs multicanaux et des décodeurs matriciels tels que la MP Matrix (décodeur matriciel de cinéma) utilisée pour nombre de bandes son de cinéma. Dans un émetteur multicanal, un réseau prépare des signaux intermédiaires qui sont codés par des processeurs d'analyse de signal en un signal destiné à être ultérieurement transmis ou enregistré. Dans un récepteur multicanal, les informations extraites du signal codé reçu se combinent dans un réseau et sont traitées par des processus de synthèse de signaux pour fournir des signaux de sortie qui sont compatibles avec un décodeur matriciel.

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