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© Tieline Research Pty. Ltd. 2020
Genie Distribution WNET Manual v3
With Tieline codecs you can configure either a fixed or automatic jitter buffer and the settings you
use depend on the IP network over which you are connecting. Over LANs, WANs and wireless
networks the automatic jitter buffer generally works well. It adapts automatically to prevailing IP
network conditions to provide continuity of audio streaming and minimize delay.
A fixed jitter buffer is preferable over satellite connections to ensure continuity of signals.
CAUTION:
If a Tieline codec connects to a device that is using non-compliant RTP streams
then the last fixed setting programmed into the codec will be enabled (default is 500ms).
Non-compliant devices include some other brands of codec, web streams and other
devices.
Tieline ‘Auto Jitter Buffer’ Settings
The following automatic jitter buffer settings range from the most aggressive "Least Delay" setting,
which endeavors to minimize delay as much as possible while adapting to prevailing network
conditions, to the "Highest Quality" setting, which is the most conservative delay setting to
minimize packet loss when packet latency is not as critical. Best compromise is the most popular
setting used by most broadcasters as it achieves an excellent balance that minimizes latency for
bidirectional communications, as well as minimizing packet loss over most wired and wireless IP
networks.
Jitter Buffer Settings and Relationship of Latency
and Packet Loss
Least Delay:
This setting attempts to reduce the jitter buffer to the lowest possible point, while still
trying to capture the majority of data packets and keep audio quality at a high level. This setting is
the most aggressive in adapting to prevailing conditions, so the jitter buffer may vary more quickly
than with the other settings. It is not recommended in situations where jitter variation is significant,
or occurs in bursts. (E.g. cellular/multi-user wireless networks). It is best for stable and reliable links
such as dedicated or lightly-loaded WAN/LANs.
Less Delay
: This setting lies between "Best Compromise" and "Least Delay". It may assist in
reducing latency over a connection without incurring packet loss.
Best Compromise:
This default setting is the midpoint between the jitter buffer settings applicable
for "Highest Quality" and "Least Delay." It is designed to provide the safest level of good audio
quality without introducing too much latency. In most situations it will deliver very high quality and
low delay to support live bidirectional communications over cellular and wireless networks.