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

fYear

1999

fDate

36434

Firstpage

77

Lastpage

78

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Local Computer Networks, 1999. LCN '99. Conference on

Conference_Location

Lowell, MA

ISSN

0742-1303

Print_ISBN

0-7695-0309-8

Type

conf

DOI

10.1109/LCN.1999.802000

Filename

802000