Experimental Evaluation of Jitter Buffer Algorithms on Voice over IP Networks |
In Voice over IP (VoIP) applications, speech quality is mainly affected by network
Ouedraogo JP, Sun L, Mkwawa IH
impairments such as delay, jitter and packet loss. Jitter buffer algorithms are used to lessen the
impact of jitter by delaying the packet playout time. The aim of the paper is to evaluate and
enhance the performance of different jitter buffer algorithms over a VoIP testbed based on
Gstreamer. Preliminary results show that a combination of an algorithm that reacts more
quickly to network variations and an algorithm that reduces the playout delay achieves the best
trade-off between playout delay, buffer discarding rate and perceived listening only speech
quality.