Delay and delay variance (jitter)

The end-to-end delay (from mouth to ear - for audio), includes:

encoding, packetization, (transmission, propagation, switching/routing, receiving,)+ dejittering, decoding, playing

To hide the jitter we generally use playout buffer only in the final receiver.

Note: This playout buffer adds additional delay in order to hide the delay variations (this is called: delayed playback), playback delay > delay variance

Transcript

[slide83] But, it hides the delay variations.