教育システム情報学会誌
Online ISSN : 2188-0980
Print ISSN : 1341-4135
ISSN-L : 1341-4135
実践論文
多地点IP通信によるリアルタイム型遠隔対話環境において受信バッファリング制御が主観品質と返答時間に及ぼす影響
深谷 和義山田 祐也田坂 修二
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2009 年 26 巻 2 号 p. 161-171

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This paper evaluates subjective quality and response time of real-time distance interactive environments in multipoint IP communications. Buffering control at receiver terminals is effective in improving intra-stream and inter-stream media synchronization quality, while it may degrade the inter-destination synchronization quality. By experiment, we quantitatively clarify factors which affect the subjective quality and response time when the buffering control is exerted. We then see that the overall subjective quality and response time are affected by the inter-destination synchronization quality. Furthermore, we show that the improvement of subjective quality and response time enhances the inter-destination synchronization quality.

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© 2009 教育システム情報学会
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