抖动缓冲器有两种，静态的和动态的。
而动态抖动缓冲器是基于软件的，它由网管配置以适应网络延迟的改变。
A dynamic jitter buffer is software-based and can be configured by the network administrator to adapt to changes in the network's delay.
研究结果表明，增大缓冲器容量可以降低信元丢失率，但会增大时延和时延抖动。
The analysis shows that although loss probability decreases through expanding buffer capacity, delay and delay jitter increase, whose effect on QOS will not be negligible.
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