Patent ID: 7761304
Filing Date: 2010-07-20
Classification: G10L

Abstract:
1. A method for encoding audio channels, the method comprising: generating one or more cue codes for C input channels; downmixing the C input channels to generate at least one downmixed channel; estimating a time lag between the at least one downmixed channel and at least one of E externally provided channel(s), wherein C>E≧1; adjusting relative timing between the E externally provided channel(s) and the one or more cue codes based on the estimated time lag to improve synchronization between the E externally provided channel(s) and the one or more cue codes; and transmitting the E externally provided channel(s) and the one or more cue codes to enable a decoder to perform synthesis processing during decoding of the E externally provided channel(s) based on the one or more cue codes.