Audio coding and transcoding using perceptual distortion templates
AssigneeIntel Corporation
InventorAlex A. Lopez-Estrada
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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.
Claims30
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.
A method of coding an audio stream, comprising:
- 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.
A program code storage device, comprising:
- 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.
Dependencies are inferred from the claim text.