Method and apparatus for generating side information bitstream of multi-object audio signal

Abstract

Provided is a method and apparatus for generating a side information bitstream of a multi-object audio signal. The apparatus for generating a side information bitstream of a multi-object audio signal includes a spatial cue information input unit configured to receive spatial cue information generated in an encoder of the multi-object audio signal, a preset information input unit configured to receive preset information for the multi-object audio signal, and a side information bitstream generator configured to generate the side information bitstream based on the spatial cue information and the preset information. The side information bitstream includes a header region and a frame region, and the preset information is included in the frame region.

What is claimed is: 
     
         1 . A apparatus for processing a multi-object audio signal comprising:
 a processor configured to:   receive a downmix signal related to a plurality of audio objects;   generate a plurality of audio objects from the downmix signal; and   render the plurality of audio objects into a least one of channels using a preset information related to audio object or a playback system,   wherein the preset information includes at least one of (i) a layout of a playback system for a mono system, a stereo system and multi-channel system, (ii) an audio object ID, (iii) object location, (iv) object level and (v) a azimuth degree and an elevation degree of the object.   
     
     
         2 . The apparatus of  claim 1 , wherein the processor renders the plurality of audio objects using preset information expressed in matrix information configuring the layout and the object ID. 
     
     
         3 . The apparatus of  claim 1 , wherein the preset information is used to define audio scene for rendering the plurality of audio objects. 
     
     
         4 . The apparatus of  claim 1 , wherein the processor generates the plurality of audio objects from the downmix signal using spatial information. 
     
     
         5 . The apparatus of  claim 1 , wherein the preset information is extracted from a frame of bitstream. 
     
     
         6 . The apparatus of  claim 1 , wherein the frame includes one or more preset information. 
     
     
         7 . A method for processing a multi-object audio signal performed by a processor comprising:
 receiving a downmix signal related to a plurality of audio objects;   generating a plurality of audio objects from the downmix signal; and   rendering the plurality of audio objects into a least one of channels using a preset information related to audio object or a playback system,   wherein the preset information includes at least one of (i) a layout of a playback system for a mono system, a stereo system and multi-channel system, (ii) an audio object ID, (iii) object location, (iv) object level and (v) a azimuth degree and an elevation degree of the object.   
     
     
         8 . The method of  claim 7 , wherein the rendering comprising:
 rendering the plurality of audio objects using preset information expressed in matrix information configuring the layout and the object ID.   
     
     
         9 . The method of  claim 7 , wherein the preset information is used to define audio scene for rendering the plurality of audio objects. 
     
     
         10 . The method of  claim 7 , wherein the generating comprising:
 generating the plurality of audio objects from the downmix signal using spatial information.   
     
     
         11 . The method of  claim 7 , wherein the preset information is extracted from a frame of bitstream. 
     
     
         12 . The method of  claim 7 , wherein the frame includes one or more preset information