Patent ID: 7716043
Filing Date: 2010-05-11
Classification: G10L,H04S

Abstract:
1. A method of decoding an audio signal performed by an audio decoding apparatus, comprising: receiving, in the audio decoding apparatus, an audio signal including a downmix signal encoded according to a downmix coding scheme and a plural-channel audio coding scheme and spatial information to generate a plural-channel audio signal, the downmix signal including the plural-channel audio signal and the spatial information being delayed within the audio signal; first decoding, in the audio decoding apparatus, the downmix signal according to the downmix coding scheme; and second decoding, in the audio decoding apparatus, the decoded downmix signal according to the plural-channel audio coding scheme, comprising: wherein, before receiving the audio signal, the spatial information is delayed by an amount of time substantially equal to a sum of a first delay time and a second delay time, the first delay time including an elapsed time of the first decoding, and the second delay time including an elapsed time of the converting.