Audio coding and transcoding using perceptual distortion templates
First Claim
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1. An audio coding system, comprising:
- a template generation component to generate templates for use in an audio coding operation, said template generation component including a templates database populated by at least one distortion threshold template; and
an audio coding component that performs an audio coding operation, said audio coding operation utilizing said at least one distortion threshold template.
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Abstract
A system and method of encoding an audio stream includes generation of a distortion threshold templates database that is accessible by a perceptual audio encoder. The audio encoder utilizes the threshold templates to operate a compression algorithm, obviating the need to implement a psycho-acoustic model to generate a distortion threshold for each compression operation. A similar templates database may be used in a transcoding operation, again bypassing a psycho-acoustic modeling operation and promoting system efficiency.
18 Citations
30 Claims
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1. An audio coding system, comprising:
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a template generation component to generate templates for use in an audio coding operation, said template generation component including a templates database populated by at least one distortion threshold template; and
an audio coding component that performs an audio coding operation, said audio coding operation utilizing said at least one distortion threshold template. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of coding an audio stream, comprising:
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providing a database populated by at least one distortion threshold template;
providing an audio coding component that performs an audio coding operation that utilizes said at least one distortion threshold template;
receiving an incoming audio stream;
performing said audio coding operation utilizing said at least one distortion threshold template on said incoming audio stream; and
producing a coded audio stream. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A program code storage device, comprising:
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a machine-readable storage medium; and
machine-readable program code, stored on the machine-readable storage medium, the machine-readable program code having instructions to;
provide a database populated by at least one distortion threshold template;
provide an audio coding component that performs an audio coding operation that utilizes said at least one distortion threshold template;
receive an incoming audio stream;
perform said audio coding operation utilizing said at least one distortion threshold template on said incoming audio stream; and
produce a coded audio stream. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification