Quantization of speech and audio coding parameters using partial information on atypical subsequences
AssigneeDoCoMo Communications Laboratories USA, Inc.
InventorSean Ramprashad
Life of this patent
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Abstract
A method and apparatus is disclosed herein for a quantizing parameters using partial information on atypical subsequences. In one embodiment, the method comprises partially classifying a first plurality of subsequences in a target vector into a number of selected groups, creating a refined fidelity criterion for each subsequence of the first plurality of subsequences based on information derived from classification, dividing a target vector into a second plurality of subsequences, and encoding the second plurality of subsequences, including quantizing the second plurality of subsequences given the refined fidelity criterion.
Claims53
A method comprising:
- partially classifying a first plurality of subsequences in a target vector into a number of selected groups;
- creating a refined fidelity criterion for each subsequence of the first plurality of subsequences based on information derived from classification;
- dividing a target vector into a second plurality of subsequences;
- and
- encoding the second plurality of subsequences, including quantizing the second plurality of subsequences given the refined fidelity criterion.
An article of manufacture comprising one or more computer readable media storing instructions which, when executed by a system, causes the system to perform a method comprising:
- partially classifying a first plurality of subsequences in the target vector into a number of selected groups;
- creating a refined fidelity criterion for each subsequence of the first plurality of subsequences based on information derived from classification;
- dividing a target vector into a second plurality of subsequences;
- and
- encoding the second plurality of subsequences, including quantizing the second plurality of subsequences given the refined fidelity criterion.
A method comprising:
- receiving a bitstream having encoded information;
- decoding classification information from the bitstream, the classification information created during encoding by partially classifying subsequences in a target vector;
- creating a fidelity criterion for each subsequence of the first plurality of subsequences based on decoded classification information;
- and
- decoding a first plurality of encoded subsequences from the bitstream based on a known order and the fidelity criterion.
An article of manufacture comprising one or more computer readable media storing instructions which, when executed by a system, causes the system to perform a method comprising:
- receiving a bitstream having encoded information;
- decoding classification information from the bitstream, the classification information created during encoding by partially classifying subsequences in a target vector;
- creating a fidelity criteria for each subsequence of the first plurality of subsequences based on decoded classification information;
- and
- decoding a first plurality of encoded subsequences from the bitstream based on a known order and the fidelity criteria.
Dependencies are inferred from the claim text.