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Full-Text Articles in Engineering Science and Materials
Adaptive Voip Playout Scheduling: Assessing User Satisfaction, Miroslaw Narbutt, Andrew Kelly, Liam Murphy, Philip Perry
Adaptive Voip Playout Scheduling: Assessing User Satisfaction, Miroslaw Narbutt, Andrew Kelly, Liam Murphy, Philip Perry
Articles
Delay and packet loss dramatically affect the quality of a voice-over-IP (VoIP) call and depend on the playout buffer scheme implemented at the receiver. The choice of playout algorithm can’t be based on statistical metrics without considering the perceived end-to-end conversational speech quality. The authors present a method for evaluating various playout algorithms that extends the Emodel concept by estimating user satisfaction from time-varying transmission impairments. This article evaluates several playout algorithms and shows a correspondence between their results and those obtained via statistical loss and delay metrics.