Patent ID: 8417531
Filing Date: 2013-04-09
Classification: G10L

Abstract:
1. A method of decoding an audio signal, comprising: receiving a downmix signal including at least two object signals, and object-based side information, wherein the object-based side information includes channel distribution ratio information indicating a gain ratio of the object signal contributing to each channel of the downmix signal; calculating effect parameter for modifying a part of the at least two object signals being included in the downmix signal; receiving control information indicating position or level of the object signal being included in the downmix signal; generating preprocessing information for controlling position or level of the at least two object signals by using the channel distribution ratio information and the control information; modifying spectrum of the part of the at least two object signals by applying the effect parameter to the part of the at least two object signal included in the downmix signal; and modifying the downmix signal by applying the preprocessing information to the downmix signal including the part of the at least two object signal.