대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)

대한전자공학회 (The Institute of Electronics and Information Engineers)
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FEC 기능을 추가한 AMR-WB 음성 부호화기를 이용한 패킷 손실 복구

Packet Loss Recovery Using the AMR-WB Coder with FEC

  • Park, In-Su (Dept. of Radio Engineering, Chungbuk National University) ;
  • Hwang, Jeong-Joon (Dept. of Radio Engineering, Chungbuk National University) ;
  • Lee, In-Sung (Dept. of Radio Engineering, Chungbuk National University)
  • 발행 : 2006.06.21
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초록

This paper suggests the packet loss recovery method to communicate in real-time in the Internet. To reduce the effects of packet loss, Forward Error Correction(FEC) that adds redundant information to voice packets can be used. The major cause for speech quality degradation in IP-networks is packet loss. So, We recovered single lossy packet by using FEC method and concealed continued errors. The proposed scheme is evaluated in the Gilbert Internet channel model. The high quality of audio maintained up to 30% packet loss.

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