지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2007.12
- 수록면
- 1,551 - 1,558 (8page)
이용수
초록· 키워드
오류제보하기
The standard of evaluating function of speech coder for mobile telecommunication can be shown in channel capacity, noise immunity, encryption, complexity and encoding delay largely. This study is an algorithm to reduce complexity applying to CDMA(Code Division Multiple Access) mobile telecommunication system, which has a benefit of keeping the existing advantage of telecommunication quality and low transmission rate. This paper has an objective to reduce the computing complexity by controlling the frequency band nonuniform during the changing process of LSP(Line Spectrum Pairs) parameters from LPC(Line Predictive Coding) coefficients used for EVRC(Enhanced Variable-Rate Coder, IS-127) speech coders. Its experimental result showed that when comparing the speech coder applied by the proposed algorithm with the existing EVRC speech coder, it's decreased by 45% at average. Also, the values of LSP parameters, Synthetic speech signal and Spectrogram test result were obtained same as the existing method.
목차
ABSTRACT
1. INTRODUCTION
2. FEATURE OF EVRC SPEECH CODER
3. PROPOSED ALGORITHM
4. EXPERIMENTAL RESULTS
5. CONCLUSION
REFERENCES
참고문헌 (14)
참고문헌 신청
1. [기타자료] - TIA / 1994 / Speech service option standard for wideband spread spectrum digital cellular system
2. [기타자료] - Qualcomm Inc. / 1995 / High rate speech service option for wideband spread spectrum communications systems
3. [학술대회논문] - G. Schroeder / 1995 / The standardization process for the proposed 8kbps speech coder standard / IEEE Speech Coding Workshop
4. [기타자료] - / 1996 / ITU-T Recommendation G.729, Coding of Speech at 8kbit/s CS-ACELP Speech Coder
5. [기타자료] - / 1996 / ITU-T Recommendation G.729 Annex A, Reduced Complexity 8kbit/s CS-ACELP Speech Codec
2. [기타자료] - Qualcomm Inc. / 1995 / High rate speech service option for wideband spread spectrum communications systems
3. [학술대회논문] - G. Schroeder / 1995 / The standardization process for the proposed 8kbps speech coder standard / IEEE Speech Coding Workshop
4. [기타자료] - / 1996 / ITU-T Recommendation G.729, Coding of Speech at 8kbit/s CS-ACELP Speech Coder
5. [기타자료] - / 1996 / ITU-T Recommendation G.729 Annex A, Reduced Complexity 8kbit/s CS-ACELP Speech Codec
함께 읽어보면 좋을 논문
논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!
-
The Performance Evaluation of Speech Coder for CDMA IMT-2000 System
CDMA International Conference and Exhibition
1998 .01
-
A Study on the Performance Evaluation of a Speech Coder for Mobile Communication System : A Channel Error Environment
대한전자공학회 워크샵
1997 .01
-
A Study on the Performance Evaluation of a Speech Coder for Mobile Communication System : A Channel Error Environment
한국통신학회 워크샵
1997 .01
-
EVRC 코덱으로 음악을 압축할 때 사용하는 전처리 기법
한국통신학회 학술대회논문집
2002 .11
-
Echo Canceller Combined with a Speech Coder in the CDMA Digital Cellular System
ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications
1997 .01
-
유무선망에서 사용되는 디지털 음성 부호화 기술 동향
방송공학회논문지
2005 .09
-
EVRC의 고속 구현 알고리듬
한국음향학회지
2001 .01
-
A Single chip QCELP Speech Coder for CDMA Mobile System
ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications
1997 .01
-
Design of a variable rate speech codec for the W-CDMA system
한국음향학회 워크샵
1998 .01
-
Low Complexity Vector Quantizer Design for LSP Parameters
한국음향학회지
1998 .01
-
A PERFORMANCE STUDY OF SPEECH CODERS FOR TELEPHONE CONFERENCING IN DIGITAL MOBILE COMMUNICATION NETWORKS
한국소음진동공학회 국제학술발표논문집
1994 .01
-
CDMA 이동통신 시스템용 음성부호화기 설계 및 구현 ( Design and Implementation of a Speech Coder for CDMA Cellular System )
전자공학회논문지-B
1996 .10
-
피치예측과 점진적 복원 기법을 이용한 EVRC 음질개선
한국음향학회지
1999 .01
-
LSP 파라미터의 분포특성을 이용한 EVRC의 음질개선에 관한 연구
한국산학기술학회 논문지
2011 .12
-
CDMA 이동통신 시스템을 위한 가변 전송률 음성 부호화기 성능 분석 비교
한국통신학회 학술대회논문집
1998 .07
-
CDMA 이동통신 시스템을 위한 가변 전송률 음성 부호화기 성능 분석 비교 ( The Performance Evaluation of the Variable Rate Speech Coder for CDMA Mobile Communication System )
한국통신학회 학술대회논문집
1998 .01
-
웨이브렛 변환을 적용한 광대역 음성부호화 알고리즘
한국음향학회지
2002 .01
-
A Very Low Complexity VSELP Speech Coder Using Regular Pulse Basis Vectors
ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications
1996 .01
-
ARM9 $Thumb^{\circledR}$ 프로세서 코어를 이용한 G.729A의 실시간 구현
한국음향학회지
2001 .01
이 논문의 저자 정보
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0101-2012-004-004431080