상세정보
등록 서로 다른 대역폭을 갖는 켈프 방식 코덱들 간의 상호 부호화 장치 및 그 방법
- 출원번호
- 10697909 (2003.10.30)
- 공개번호
- 20040102966 (2004.05.27)
- 등록번호
- 7684978 (2010.03.23)
- 출원국
- 미국
- 협약과제
- 02MT2100, 차세대 고품질 VoIP 핵심 원천기술, 김봉태
- 초록
- The present invention overcomes problems of tandem coding method such as degradation of speech quality, increased system latency and computations. An apparatus for trans-coding between code excited linear prediction (CELP) type codecs with different bandwidths, includes: a format parameter translating unit for generating output formant parameters by translating formant parameters from input CELP format to output CELP format; a formant parameter quantizing unit for receiving the output format formant parameters and quantizing the output format formant filter coefficients; an excited parameter translating unit for generating output excitation parameters by translating excitation parameters from input CELP format to output CELP format; and an excitation quantizing unit for receiving the output format excitation parameters and quantizing the output format excitation parameters.
- KSP 제안 키워드
- Coding method, Filter coefficients, Linear prediction, code excited, code excited linear prediction, speech quality