Patent ID: 7961889
Filing Date: 2011-06-14
Classification: G10L,H04S

Abstract:
1. An apparatus, including at least one processing device, for processing a multi-channel audio signal using space information, comprising: a main coding unit, using the at least one processing device, down mixing a multi-channel audio signal by applying space information to surround components included in the multi-channel audio signal, generating side information using the multi-channel audio signal or a stereo signal of a down-mixed result, coding the stereo signal and the side information to yield a coded result, and transmitting the coded result as a coding signal; and a main decoding unit receiving the coding signal, decoding the stereo signal and the side information which corresponds to the space information including a power ratio between channels, from the received coding signal, up mixing the decoded stereo signal using the decoded side information and an inverse head-related transfer function (HRTF) information, and restoring the multi-channel audio signal.