Decoding device, decoding method, encoding device, encoding method, and program
First Claim
1. A decoding device comprising:
- processing circuitry that functions as;
an identification information detection unit configured to read identification information for identifying whether predetermined information related to audio data is stored in a comment region of a PCE (Program Configuration Element) field of an encoded bit stream of an AAC (Advanced Audio Coding) frame according to an AAC standard, wherein the predetermined information stored in the comment region of the PCE field includes height information about an arrangement of speakers in a vertical direction;
a reading unit configured to read the predetermined information from the comment region on the basis of a plurality of items of the identification information;
a decoding unit configured to decode the audio data based on the predetermined information; and
an output unit configured to output the decoded audio data.
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Abstract
The present technique relates to a decoding device, a decoding method, an encoding device, an encoding method, and a program which can obtain a high-quality realistic sound.
The encoding device stores speaker arrangement information in a comment region in a PCE of an encoded bit stream and stores a synchronous word and identification information in the comment region such that other public comments and the speaker arrangement information stored in the comment region can be distinguished from each other. When an encoded bit stream is decoded, it is determined whether the speaker arrangement information is stored on the basis of the synchronous word and the identification information stored in the comment region. Audio data included in the encoded bit stream is output according to the arrangement of the speakers corresponding to the determination result. The present technique can be applied to an encoding device.
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Citations
16 Claims
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1. A decoding device comprising:
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processing circuitry that functions as; an identification information detection unit configured to read identification information for identifying whether predetermined information related to audio data is stored in a comment region of a PCE (Program Configuration Element) field of an encoded bit stream of an AAC (Advanced Audio Coding) frame according to an AAC standard, wherein the predetermined information stored in the comment region of the PCE field includes height information about an arrangement of speakers in a vertical direction; a reading unit configured to read the predetermined information from the comment region on the basis of a plurality of items of the identification information; a decoding unit configured to decode the audio data based on the predetermined information; and an output unit configured to output the decoded audio data. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A decoding method comprising:
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reading, by processing circuitry, identification information for identifying whether predetermined information related to audio data is stored in a comment region of a PCE (Program Configuration Element) field of an encoded bit stream of an AAC (Advanced Audio Coding) frame according to an AAC standard, wherein the predetermined information stored in the comment region of the PCE field includes height information about an arrangement of speakers in a vertical direction; reading, by the processing circuitry, the predetermined information from the comment region on the basis of a plurality of items of the identification information; decoding the audio data based on the predetermined information; and outputting the decoded audio data.
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8. A computer-readable device encoded with computer-executable instructions that, when executed by processing circuitry, perform a process comprising:
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reading identification information for identifying whether predetermined information related to audio data is stored in a comment region of a PCE (Program Configuration Element) field of an encoded bit stream of an AAC (Advanced Audio Coding) frame according to an AAC standard, wherein the predetermined information stored in the comment region of the PCE field includes height information about an arrangement of speakers in a vertical direction; reading the predetermined information from the comment region on the basis of a plurality of items of the identification information; decoding the audio data based on the predetermined information; and outputting the decoded audio data.
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9. An encoding device comprising:
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processing circuitry that functions as; an encoding unit configured to encode a plurality of identification information items for identifying whether predetermined information related to audio data is present, to encode the predetermined information and to encode the audio data; and a packing unit configured to store the encoded predetermined information and the encoded identification information in a comment region of a PCE (Program Configuration Element) field of an encoded bit stream of an AAC (Advanced Audio Coding) frame according to an AAC standard, to store the encoded audio data in the encoded bit stream and to output the encoded bit stream, wherein the predetermined information stored in the comment region of the PCE field includes height information about an arrangement of speakers in a vertical direction. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An encoding method comprising:
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encoding, by processing circuitry, a plurality of identification information items for identifying whether predetermined information related to audio data is present, encoding the predetermined information and encoding the audio data; and storing, by the processing circuitry, the encoded predetermined information and the encoded identification information in a comment region of a PCE (Program Configuration Element) field of an encoded bit stream of an AAC (Advanced Audio Coding) frame according to an AAC standard, storing the encoded audio data in the encoded bit stream and outputting the encoded bit stream, wherein the predetermined information stored in the comment region of the PCE field includes height information about an arrangement of speakers in a vertical direction.
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16. A computer-readable device encoded with computer-executable instructions that, when executed by processing circuitry, perform a process comprising:
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encoding a plurality of identification information items for identifying whether predetermined information related to audio data is present, encoding the predetermined information and encoding the audio data; and storing the encoded predetermined information and the encoded identification information in a comment region of a PCE (Program Configuration Element) field of an encoded bit stream of an AAC (Advanced Audio Coding) frame according to an AAC standard, storing the encoded audio data in the encoded bit stream and outputting the encoded bit stream, wherein the predetermined information stored in the comment region of the PCE field includes height information about an arrangement of speakers in a vertical direction.
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Specification