Encoding device and encoding method, decoding device and decoding method, and program

Abstract

There is provided a decoding device including at least one circuit configured to acquire one or more encoded audio signals including a plurality of channels and/or a plurality of objects and priority information for each of the plurality of channels and/or the plurality of objects, and to decode the one or more encoded audio signals according to the priority information.

1 .- 21 . (canceled) 
     
     
         22 . A decoding device comprising:
 at least one circuit configured to:
 acquire encoded audio signals of a plurality of channels and/or encoded audio signals of a plurality of objects with priority information; 
 decode the encoded audio signals of a plurality of objects for which a priority degree indicated by the priority information is equal to or higher than a degree, and refrain from decoding at least one other of the encoded audio signals for which a priority degree indicated by the priority information is less than the degree, and/or decode the encoded audio signals of a plurality of channels; and 
 mix the audio signals of the plurality of channels decoded and the audio signals of the plurality of objects decoded for generating audio signals supplied to speakers, wherein the audio signals supplied to the speakers are not including the audio signals of the plurality of objects refrained from decoding. 
   
     
     
         23 . The decoding device according to  claim 22 , wherein the at least one circuit is configured to change the degree based at least in part on the priority information for the plurality of objects. 
     
     
         24 . The decoding device according to  claim 22 , wherein:
 the at least one circuit is configured to acquire a plurality of sets of priority information for the one or more encoded audio signals, and wherein the at least one circuit is configured to decode the one or more encoded audio signals at least in part by selecting one of the sets of priority information and decoding based at least in part on the one set of priority information.   
     
     
         25 . The decoding device according to  claim 24 , wherein the at least one circuit is configured to select the one of the sets of priority information according to a calculation capability of the decoding device. 
     
     
         26 . The decoding device according to  claim 22 , wherein the at least one circuit is further configured to generate the priority information based at least in part on the encoded audio signal. 
     
     
         27 . The decoding device according to  claim 26 , wherein the at least one circuit is configured to generate the priority information based at least in part on a sound pressure or a spectral shape of the audio of the one or more encoded audio signals. 
     
     
         28 . A decoding method comprising:
 acquiring encoded audio signals of a plurality of channels and/or encoded audio signals of a plurality of objects with priority information;   decoding the encoded audio signals of a plurality of objects for which a priority degree indicated by the priority information is equal to or higher than a degree, and refraining from decoding at least one other of the encoded audio signals for which a priority degree indicated by the priority information is less than the degree, and/or decoding the encoded audio signals of a plurality of channels; and   mixing the audio signals of the plurality of channels decoded and the audio signals of the plurality of objects decoded for generating audio signals supplied to speakers, wherein the audio signals supplied to the speakers are not including the audio signals of the plurality of objects refrained from decoding.   
     
     
         29 . The decoding method according to  claim 28 , further comprising:
 changing the degree based at least in part on the priority information for the plurality of objects.   
     
     
         30 . The decoding method according to  claim 28 , further comprising:
 acquiring a plurality of sets of priority information for the one or more encoded audio signals, and decoding the one or more encoded audio signals at least in part by selecting one of the sets of priority information and decoding based at least in part on the one set of priority information.   
     
     
         31 . The decoding method according to  claim 30 , wherein selecting one of the sets of priority information comprises selecting the one of the sets of priority information according to a calculation capability of the decoding device. 
     
     
         32 . The decoding method according to  claim 28 , further comprising:
 generating the priority information based at least in part on the encoded audio signal.   
     
     
         33 . The decoding method according to  claim 32 , wherein generating the priority information comprises generating the priority information based at least in part on a sound pressure or a spectral shape of the audio of the one or more encoded audio signals. 
     
     
         34 . At least one non-transitory computer-readable storage medium having encoded thereon executable instructions that, when executed by at least one processor, cause the at least one processor to carry out a method comprising:
 acquiring encoded audio signals of a plurality of channels and/or encoded audio signals of a plurality of objects with priority information;   decoding the encoded audio signals of a plurality of objects for which a priority degree indicated by the priority information is equal to or higher than a degree, and refraining from decoding at least one other of the encoded audio signals for which a priority degree indicated by the priority information is less than the degree, and/or decoding the encoded audio signals of a plurality of channels; and   mixing the audio signals of the plurality of channels decoded and the audio signals of the plurality of objects decoded for generating audio signals supplied to speakers, wherein the audio signals supplied to the speakers are not including the audio signals of the plurality of objects refrained from decoding.   
     
     
         35 . The at least one non-transitory computer-readable storage medium according to  claim 34 , wherein the method further comprises:
 changing the degree based at least in part on the priority information for the plurality of objects.   
     
     
         36 . The at least one non-transitory computer-readable storage medium according to  claim 34 , wherein the method further comprises:
 acquiring a plurality of sets of priority information for the one or more encoded audio signals, and decoding the one or more encoded audio signals at least in part by selecting one of the sets of priority information and decoding based at least in part on the one set of priority information.   
     
     
         37 . The at least one non-transitory computer-readable storage medium according to  claim 36 , wherein selecting one of the sets of priority information comprises selecting the one of the sets of priority information according to a calculation capability of the decoding device. 
     
     
         38 . The at least one non-transitory computer-readable storage medium according to  claim 34 , wherein the method further comprises:
 generating the priority information based at least in part on the encoded audio signal.   
     
     
         39 . The at least one non-transitory computer-readable storage medium according to  claim 38 , wherein generating the priority information comprises generating the priority information based at least in part on a sound pressure or a spectral shape of the audio of the one or more encoded audio signals.