Method for improvement of G.723.1 processing time and speech quality and for reduction of bit rate in CELP vocoder and CELP vococer using the same
US6687668B2 · kind B2 · utility
14Cited by
2References
4Claims
0Family size
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Key dates
| Filing date | Dec 28, 2000 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Feb 8, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2019/0013
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of searching an MP-MLQ fixed codebook through bit predetermination includes the steps of generating a target vector with amplitude, reducing time to search an optimal pulse array through the bit predetermination and searching all of pulses if two errors have an identical value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.