Proceedings of the KSPS conference (대한음성학회:학술대회논문집)

The Korean Society Of Phonetic Sciences And Speech Technology (대한음성학회)
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Performance Evaluation of Frame Erasure Concealment Algorithms in VoIP Coders

VoIP 코더들의 프레임손실은닉 알고리즘 성능평가

  • 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.)
  • 한승호 (한국정보통신대 음성/음향 정보 연구실) ;
  • 문광 (한국정보통신대 음성/음향 정보 연구실) ;
  • 한민수 (한국정보통신대 음성/음향 정보 연구실)
  • Published : 2004.05.06
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Abstract

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.

Keywords