Nova Patents
NO20073892L

Parametric joint-coding of audio sources

Abstract

An encoding scene as multiple audio source signals to be sent or stored for the purpose of mixing wave field synthesis, multi-channel surround signals or stereo signals after decoding the source signals. The proposed technique suggests significant code gain when using common coding of the source signals, relative to separate coding of them, even if no redundancy exists between the individual source signals. This is made possible by considering static properties of the source signals, the properties of the mixing techniques and listening to a three-dimensional sound image. The sum of the source signals is transmitted along with the static properties to them, since these properties essentially determine the perceptually important space queues for the ready mixed audio channels. The source signals are restored in the receiver so that their static properties are approximately the same as those of the original source signals. Subjective evaluations indicate that good audio quality was achieved by using the proposed scenario or scheme.

Term

No projected expiry on record.

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1 claim: 1 independent, 0 dependent

  1. 1
    originalkildesignalene. Subjektive evalueringer indikerer at man bar man oppnådd en god audiokvalitet ved hjelp av det foreslåtte scenarium eller skjema.