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Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 24, 2008
Patent Application Number
10416532
Date Filed
November 29, 2001
Patent Primary Examiner
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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