메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색
질문

논문 기본 정보

자료유형
학술대회자료
저자정보
Choong Sang Cho (전자부품연구원) Nam In Park (광주과학기술원) Hong Kook Kim (광주과학기술원)
저널정보
대한전자공학회 ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications ITC-CSCC : 2008
발행연도
2008.7
수록면
941 - 944 (4page)

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색
질문

초록· 키워드

오류제보하기
In this paper, a packet loss concealment (PLC) algorithm for CELP-type speech coders is proposed which improves the quality of decoded speech under burst packet loss conditions. The proposed PLC algorithm is based on the reconstruction of excitation by combining voiced excitation and random excitation, where the voice excitation is obtained from the adaptive codebook excitation scaled by a voicing probability and the random excitation is generated by permutating the previous decoded excitation. The voicing probability is estimated from the correlation using the decoded excitation and pitch of the previous frames. In addition, a linear regression-based gain amplitude is estimated and applied to the reconstructed excitation for the compensatation of the undesirable amplitude change under a burst packet loss condition. The proposed algorithm is implemented as a PLC algorithm for G.729 and its performance is compared with PLC employed in G.729 by means of perceptual evaluation of speech quality (PESQ), a waveform comparison, and an A-B preference test under random and burst packet loss rates of 3% and 5%. It is shown that the proposed algorithm provides significanlty better speech quality than the PLC of G.729, especially under burst packet losses.

목차

Abstract
1. Introduction
2. Conventional PLC Algorithm
3. Proposed Algorithm
4. Performance Evaluation
5. Conclusion
Acknowledgement
Reference

참고문헌 (0)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0

UCI(KEPA) : I410-ECN-0101-2013-569-001140879