Patent ID: 8521313

Claim:
A method of processing a signal, comprising: generating source mapping information by using spatial information for multi-sources; generating at least one rendering information by using the source mapping information and filter information for a surround effect; interpolating the at least one rendering information by using neighbor rendering information of the at least one rendering information; and generating a surround signal having the surround effect by applying the interpolated rendering information to a downmix signal generated by downmixing the multi-sources, wherein the downmix signal includes a left input channel and a right input channel, the surround signal includes a left out channel and a right output channel, the interpolated rendering information comprises a first rendering information and a second rendering information, the first rendering information includes first information for generating the left output channel by applying the first information to the left input channel, and second information for generating the right output channel by applying the second information to the right input channel, and, the second rendering information includes first cross-rendering information for generating the right output channel by applying the first cross-rendering information to the left input channel, and second cross-rendering information for generating the left output channel by applying the second cross-rendering information to the right input channel.