대한음성학회:학술대회논문집 (Proceedings of the KSPS conference)
- 대한음성학회 2004년도 춘계 학술대회 발표논문집
- /
- Pages.235-238
- /
- 2004
VoIP 코더들의 프레임손실은닉 알고리즘 성능평가
Performance Evaluation of Frame Erasure Concealment Algorithms in VoIP Coders
- Han, Seung-Ho (Speech and Audio Information Lab, Information and Communications Univ.) ;
- Moon, Kwang (Speech and Audio Information Lab, Information and Communications Univ.) ;
- Han, Min-Soo (Speech and Audio Information Lab, Information and Communications Univ.)
- 발행 : 2004.05.06
초록
Frame erasures cause speech quality degradation in wireless communication networks or packet networks. The degradation becomes worse when consecutive frame erasures occur. Speech coders have a frame erasure concealment(FEC) mechanism to compensate for frame erasures. It is meaningful to evaluate the performance of FEC mechanisms for frame erasures that occur in communications networks. In this paper, various frame erasures are designed. And the FEC algorithms of speech coders are evaluated and analyzed with the Perceptual Evaluation of Speech Quality(PESQ). It is found that the performances vary in accordance with frame erasure types, frame erasure rates, and utterance lengths.
키워드