Title :
Synchronisation skew: a QoS measurement study
Author :
Jha, S. ; Seneviratne, A.
Author_Institution :
Sch. of Comput. Sci. & Eng., New South Wales Univ., Kensington, NSW, Australia
Abstract :
The term lip synchronisation applies to synchronising audio with the movement of a person´s lips. If the data is out of synchronisation then human perception tends to identify the presentation as artificial, strange and annoying. We propose metrics to evaluate the degree of synchronisation for interactive multimedia communications. Through experimental results we demonstrate that such metrics are quite useful in providing quality of service (QoS) feedback to end users. A quantitative evaluation of the degree of synchronisation between loosely coupled multimedia tools is performed based on mean absolute deviation calculations and a subjective evaluation
Keywords :
audio signal processing; delays; interactive video; multimedia communication; quality of service; synchronisation; video signal processing; visual perception; QoS measurement; audio delay; audio synchronisation; experimental results; human perception; interactive multimedia communications; lip synchronisation; lips movement; loosely coupled multimedia tools; mean absolute deviation; quality of service; subjective evaluation; synchronisation skew; video playout; Delay effects;
Conference_Titel :
Local Computer Networks, 1999. LCN '99. Conference on
Conference_Location :
Lowell, MA
Print_ISBN :
0-7695-0309-8
DOI :
10.1109/LCN.1999.802000
