Seminar from UCL - Anna Watson

Thursday March 19, 14.00-15.00

Assessing Audio and Video Quality in Multicast Conferencing

Real-time multimedia communication is particularly vulnerable to the effects of network congestion. It has been proposed that bandwidth reservation should be used to guarantee a certain quality of service (QoS) for multimedia conferencing applications. However, in order to employ bandwidth reservation effectively, we need to know how much bandwidth a particular application requires. This depends largely on the quality at which different media have to be delivered. Since end-users' perception of quality will determine whether applications are successful, it is essential to establish

(a) what factors play the most important roles in perceived media quality and

(b) the minimum and maximum media quality required by a particular user group for a particular task. Identifying suitable methods and measurements to determine perceived media quality is not straightforward. Relevant issues and findings will be presented in this talk.

PostScript version of the slides here

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