Patent ID: 7783048
Filing Date: 2010-08-24
Classification: G10L,H04S

Abstract:
1. A method for decoding an audio signal performed by an audio coding system, comprising: receiving a downmix signal comprising at least one object signal; receiving object information determined when the downmix signal is generated; receiving mix information for controlling the at least one object signal; generating downmix processing information using the object information and the mix information; processing the downmix signal using the downmix processing information; and, generating multi-channel information using the object information and the mix information, wherein: a number of channels of the downmix signal is equal to a number of channels of the processed downmix signal; the object information includes at least one of object level information and object correlation information; the multi-channel information includes at least one of a channel level difference, an inter channel correlation and a channel prediction coefficient; the downmix signal corresponds to a first mono signal or a first stereo signal and the processed downmix signal corresponds to a second mono signal or a second stereo signal; the multi-channel information is used to generate a multi-channel signal using the downmix signal; and a number of channels of the multi-channel signal is more than the number of channels of the downmix signal and the number of channels of the processed downmix signal.