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Classical Playout Buffer Algorithm Revisited

Carlos A. Rodríguez LópezVitalio Alfonso RegueraEvelio M. G. FernándezWalter Godoy Jr.

Playout buffer absorbs packet jitter in order to compensate networkdelay variations. In the last decades a great number of playout bufferalgorithms have been proposed for voice over IP applications. However, onlya few have received the attention of the research community. In this paper westudy four variations of a classical algorithm under actual network scenariosaccording to recent network model proposals. The MOS scale is used to assessthe playout buffer performance in networks with different impairmentseverities. Based on the obtained results we propose a new algorithm thatoutperforms its predecessors. The proposed mechanism is simple and easy toimplement in real applications.

http://www.lbd.dcc.ufmg.br/colecoes/sbrc/2010/0047.pdf

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