Subjective evaluation of packet loss recovery techniques for voice over IP

Masahito Okamoto, Takashi Nose, Akinori Ito, Takeshi Nagano

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

We conducted a subjective evaluation experiment for VoIP speech under severe packet loss condition. The target codec was G.729, and four packet loss concealment methods were tested: parameter redundancy, SVM-based parameter redundancy, N-gram-based parameter estimation and interleaving. We first evaluated the effect of the interleaving block length on the subjective delay and speech quality. As a result, we found that the interleaving improved the subjective speech quality, but longer block length did not improve the quality. Next, we investigated the effect of PLC methods on the subjective latency and quality, and we found interleaving and simple PLC method gave the best result. N-gram-based PLC method made the quality worse.

本文言語English
ホスト出版物のタイトルICALIP 2014 - 2014 International Conference on Audio, Language and Image Processing, Proceedings
編集者Wanggen Wan, Fa-Long Luo, Xiaoqing Yu
出版社Institute of Electrical and Electronics Engineers Inc.
ページ711-714
ページ数4
ISBN(電子版)9781479939022
DOI
出版ステータスPublished - 2015 1 13
イベント4th International Conference on Audio, Language and Image Processing, ICALIP 2014 - Shanghai, China
継続期間: 2014 7 72014 7 9

出版物シリーズ

名前ICALIP 2014 - 2014 International Conference on Audio, Language and Image Processing, Proceedings

Other

Other4th International Conference on Audio, Language and Image Processing, ICALIP 2014
国/地域China
CityShanghai
Period14/7/714/7/9

ASJC Scopus subject areas

  • ソフトウェア
  • コンピュータ ビジョンおよびパターン認識
  • コンピュータ グラフィックスおよびコンピュータ支援設計

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