Patent ID: 8452430
Filing Date: 2013-05-28
Classification: G06F,G10L,G11B,H04S

Abstract:
1. An apparatus for processing an audio signal, comprising: an information receiving unit configured to receive a downmix signal including at least one object, and first information including preset information to render at least one object being included in the downmix signal, wherein the first information includes preset presence information indicating whether the preset information exists or not; an external preset information receiving unit configured to receive second information including external preset information and applied object number information indicating the number of objects to which the external preset information is being applied, the second information externally inputted, wherein the second information includes external preset presence information indicating whether the external preset information exists or not; an external preset applying-determining unit configured to determine whether the external preset information applies to the downmix signal or the preset information applies to the downmix signal, based on the applied object number information and the external preset presence information; an external preset information selecting unit configured to select one external preset information among the external preset information, when the external preset information is determined to be applied; and a rendering unit configured to control the object by applying the selected external preset information to all data regions of the downmix signal, wherein the external preset information includes an external preset rendering parameter to render the downmix signal and external preset metadata indicating an attribute of the external preset rendering parameter.