상세정보
등록 전역 펄스 교체를 통한 고정 코드북 검색방법
- 출원번호
- 10740310 (2003.12.17)
- 공개번호
- 20040193410 (2004.09.30)
- 등록번호
- 7739108 (2010.06.15)
- 출원국
- 미국
- 협약과제
- 02MT2100, 차세대 고품질 VoIP 핵심 원천기술, 김봉태
- 초록
- The present research can decrease the amount of computation and enhance speech quality by using a global pulse replacement method in a fixed codebook search. The fixed codebook search method in a speech encoder based upon global pulse replacement, includes the steps of: (a) computing absolute values of the pulse-position likelihood-estimator vectors; (b) temporarily obtaining a codebook vector; (c) computing a mathematical equation by replacing a pulse; (d) determining whether a value computed based upon the mathematical equation is increased after pulse replacement; (e) obtaining a new codebook vector by replacing the pulse; and (f) maintaining a previous codebook vector.
- KSP 제안 키워드
- Codebook search, Fixed codebook, Mathematical equation, Replacement method, search method, speech quality
- 패밀리
| 구분 | 특허 | 출원국 | KIPRIS |
|---|---|---|---|
| 등록 | ACELP 음성 부호화기의 고정 코드북 검색을 위한 효율적인 펄스 교체 방식 | 미국 |