&lt;title&gt;Distributed multimedia: user perception and dynamic QoS&lt;/title&gt;

Apteker, Ronnie T.; Fisher, James; Kisimov, Valentin; Neishlos, H.

doi:10.1117/12.171702

Cited by 16 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although we generally concur with the synchronization experimental results obtained in [Ste96], based on our observations, we believe that not all QoS experiments are going to result in such clear-cut boundaries for distinguishability, tolerance and unacceptability for QoS metrics, but they gradually decrease throughout a continuous spectrum of values. This trend is clearly evidenced in our aggregate loss experiment for video, and also in the rate experiments of [AFKN94].…”

Section: Further Inference From Experimental Resultssupporting

confidence: 48%

“…In all our graphs, we notice a correlation between the average Likert value in the Likert scale and the curve that separates the unacceptable region from the rest. This seems to indicate that the two metrics that were used in the two other reported user studies in multimedia [Ste96,AFKN94], namely the Likert and the acceptability scales, have a strong relationship to each other, and consequently can be used in our type of study interchangeably.…”

Section: Aggregate Loss Experiments For Media Streamsmentioning

confidence: 95%

“…In our design, we have strived to achieve these goals. In designing our experiment, the experimental methodology and techniques of analysis used in [Ste96,AFKN94] have been useful to us.…”

Section: Design Concerns and The Pilot Studymentioning

confidence: 99%

“…Two widely quoted papers on user studies of multimedia systems are [Ste96] and [AFKN94]. Based on an extensive study, [Ste96] concluded that audio-video lipsynchronization errors of 80 ms were undetectable, up to 120 ms were detectable but tolerated, and above 120 ms were irritating.…”

Section: Introductionmentioning

confidence: 99%

“…For audio-pointer synchronization, the respective limits were 200 and 1000 ms. In [AFKN94], perceptual effects of different frame rates were investigated for audio-visual clips with high temporal, audio and video content, i.e., having high-speed action.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Experimental Evaluation of Loss Perception in Continuous Media.

Wijesekera¹,

Srivastava²,

Nerode³

et al. 1998

View full text Add to dashboard Cite

Abstract.Perception of multimedia quality, specified by quality-of-service (QoS) metrics, can be used by system designers to optimize customer satisfaction within resource bounds enforced by general-purpose computing platforms. Media losses, rate variations and transient synchronization losses have been suspected to affect human perception of multimedia quality. This paper presents metrics to measure such defects, and results of a series of user experiments that justify such speculations. Results of the study provide bounds on losses, rate variations and transient synchronization losses as a function of user satisfaction, in the form of Likert values. It is shown how these results can be used by algorithm designers of underlying multimedia systems.

show abstract

Section: Further Inference From Experimental Resultssupporting

confidence: 48%

Section: Aggregate Loss Experiments For Media Streamsmentioning

confidence: 95%

“…In our design, we have strived to achieve these goals. In designing our experiment, the experimental methodology and techniques of analysis used in [Ste96,AFKN94] have been useful to us.…”

Section: Design Concerns and The Pilot Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Experimental Evaluation of Loss Perception in Continuous Media.

Wijesekera¹,

Srivastava²,

Nerode³

et al. 1998

View full text Add to dashboard Cite

show abstract

Interworking of B-ISDN Signaling and Internet Protocol

Suzuki

2000

Networking 2000 Broadband Communications, High Performance Networking, and Performance of Communication Networks

View full text Add to dashboard Cite

In the ITU-T and IETF, I proposed the assignment of the information field and protocol identifier in the Q.2941 GIT (Generic Identifier Transport) and Q.2957 UUS (User-to-User Signalling) for the Internet protocol. The aim is to enable B-ISDN signaling support to be used for session of the Internet protocol. The purpose of this paper is to clarify how these specifications enable B-ISDN signaling support to be used for long-lived and QoS-sensitive sessions. Long-lived session requires that the B-ISDN signaling be capable of transferring a session identifier, which is currently supported only by proprietary protocols. By using the GIT information element, B-ISDN signaling can be used to support it. To implement ATM VC support for QoS-sensitive session, this paper describes three approaches. In QoS-sensitive session using these approaches, the B-ISDN signaling must transfer the session identifier or IP signaling protocol. Therefore, B-ISDN signaling based on current recommendations and standards cannot support QoS-sensitive session. These problems can be solved by using the GIT or UUS information element, as I have proposed. 1 The Internet protocol reference model does not contain the session and presentation layers, so communication between end-to-end applications over the Internet is equivalent to a session; the term "session" is thus used in this paper.

show abstract