APPARATUS AND METHOD FOR RECOVERING MULTI-CHANNEL AUDIO SIGNAL, AND COMPUTER-READABLE MEDIUM STORING A PROGRAM PERFORMED IN THE APPARATUS

摘要

A multi-channel audio recovery apparatus, a method therefor, and a recording medium capable being read by a computer recording a program executed in the apparatus are provided to prevent a phenomenon that sound quality of a recovered multi-channel audio signal is degraded by corresponding to kinds of all codecs by using only one spatial information due to no need to calculate inter-different spatial information according to inter-different delay time, and synchronizing and applying the spatial information to a frame in consideration of inter-different delay time according to kinds of core codecs. A core decoder(40) decodes a coded down-mix signal. A delay time compensating unit(42) determines a time interval in which spatial information will be applied to the decoded down-mix signal according to a delay time of the decoded down-mix signal. An audio recovering unit(44) applies the spatial information to the decoded down-mix signal in the determined time interval, and recovers a multi-channel audio signal.