IEICE TRANSACTIONS on Communications
Tradeoff Relationship between Fidelity and Latency in Interactive Audio-Video Applications over IP Networks
Summary :
Interactive audio-video applications over IP networks have subjective tradeoffs between fidelity and latency owing to packet buffering at the receiver. Increasing the buffering time improves the fidelity, whereas it degrades the latency. This paper makes the subjective tradeoff between fidelity and latency clear in a quantitative way. In addition, we examine the effect of tasks on the subjective tradeoff. In evaluating the effect of tasks, we use two tasks according to ITU-T Recommendation P.920. An experiment was conducted to measure user-level QoS of an interactive application with the psychometric methods. We then investigate the subjective tradeoff quantitatively by QoS mapping. The experimental results confirm that there exists the buffering time which makes user-level QoS the highest. The results also show that the optimum buffering time depends on the kind of task.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E90-B No.5 pp.1112-1121
- Publication Date
- 2007/05/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1093/ietcom/e90-b.5.1112
- Type of Manuscript
- PAPER
- Category
- Network
Authors
Keyword
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Yoshihiro ITO, Shuji TASAKA, "Tradeoff Relationship between Fidelity and Latency in Interactive Audio-Video Applications over IP Networks" in IEICE TRANSACTIONS on Communications,
vol. E90-B, no. 5, pp. 1112-1121, May 2007, doi: 10.1093/ietcom/e90-b.5.1112.
Abstract: Interactive audio-video applications over IP networks have subjective tradeoffs between fidelity and latency owing to packet buffering at the receiver. Increasing the buffering time improves the fidelity, whereas it degrades the latency. This paper makes the subjective tradeoff between fidelity and latency clear in a quantitative way. In addition, we examine the effect of tasks on the subjective tradeoff. In evaluating the effect of tasks, we use two tasks according to ITU-T Recommendation P.920. An experiment was conducted to measure user-level QoS of an interactive application with the psychometric methods. We then investigate the subjective tradeoff quantitatively by QoS mapping. The experimental results confirm that there exists the buffering time which makes user-level QoS the highest. The results also show that the optimum buffering time depends on the kind of task.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e90-b.5.1112/_p
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@ARTICLE{e90-b_5_1112,
author={Yoshihiro ITO, Shuji TASAKA, },
journal={IEICE TRANSACTIONS on Communications},
title={Tradeoff Relationship between Fidelity and Latency in Interactive Audio-Video Applications over IP Networks},
year={2007},
volume={E90-B},
number={5},
pages={1112-1121},
abstract={Interactive audio-video applications over IP networks have subjective tradeoffs between fidelity and latency owing to packet buffering at the receiver. Increasing the buffering time improves the fidelity, whereas it degrades the latency. This paper makes the subjective tradeoff between fidelity and latency clear in a quantitative way. In addition, we examine the effect of tasks on the subjective tradeoff. In evaluating the effect of tasks, we use two tasks according to ITU-T Recommendation P.920. An experiment was conducted to measure user-level QoS of an interactive application with the psychometric methods. We then investigate the subjective tradeoff quantitatively by QoS mapping. The experimental results confirm that there exists the buffering time which makes user-level QoS the highest. The results also show that the optimum buffering time depends on the kind of task.},
keywords={},
doi={10.1093/ietcom/e90-b.5.1112},
ISSN={1745-1345},
month={May},}
Copy
TY - JOUR
TI - Tradeoff Relationship between Fidelity and Latency in Interactive Audio-Video Applications over IP Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 1112
EP - 1121
AU - Yoshihiro ITO
AU - Shuji TASAKA
PY - 2007
DO - 10.1093/ietcom/e90-b.5.1112
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E90-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2007
AB - Interactive audio-video applications over IP networks have subjective tradeoffs between fidelity and latency owing to packet buffering at the receiver. Increasing the buffering time improves the fidelity, whereas it degrades the latency. This paper makes the subjective tradeoff between fidelity and latency clear in a quantitative way. In addition, we examine the effect of tasks on the subjective tradeoff. In evaluating the effect of tasks, we use two tasks according to ITU-T Recommendation P.920. An experiment was conducted to measure user-level QoS of an interactive application with the psychometric methods. We then investigate the subjective tradeoff quantitatively by QoS mapping. The experimental results confirm that there exists the buffering time which makes user-level QoS the highest. The results also show that the optimum buffering time depends on the kind of task.
ER -
English
