US Patent 7392179 LPC vector quantization apparatus
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Patent abstract
The present invention carries out pre-selection on many LPC codevectors stored in an LSF codebook 101 using a weighted Euclidean distortion as a measure and carries out a full-code selection on the LPC codevectors left after the pre-selection using an amount of distortion in a spectral space as a measure. This makes it possible to improve the quantization performance of the LPC parameter vector quantizer and improve the quality of synthesized speech of the speech coder/decoder.
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US Patent 07392179 LPC vector quantization apparatus US Patent 7392179 LPC vector quantization apparatus
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Patent Number
0739217900
Patent Number
739217900
Edits on 2 Apr, 2023
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Patent Jurisdiction
Patent Number
073921790
Date of Patent
June 24, 2008
0Patent Application Number
104165320
Date Filed
November 29, 2001
0Official Website
Patent Primary Examiner
Edits on 24 Sep, 2022
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Infobox
Is a
Patent Jurisdiction
Patent Number
073921790
Date of Patent
June 24, 2008
0Patent Application Number
104165320
Date Filed
November 29, 2001
0Official Website
Patent Primary Examiner
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US Patent 07392179 LPC vector quantization apparatus
Infobox
Is a
Patent jurisdiction
Patent number
07392179
Date of patent
June 24, 2008
Patent application number
10416532
Date Filed
November 29, 2001
Patent primary examiner
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