[pulseaudio-discuss] How to control latency with CLI?

[Steven Wawryk]

Hello,

I'm trying to work out how to control latency with pulseaudio CLI scripts.

We're finding that latency varies between a few seconds to about 80 seconds.

We have a system which uses a dedicated embedded board for many channels 
of audio I/O.  Workstations
connect with the I/O board using RTP over a network.

Pulseaudio 8.0 is used on both I/O board and workstation platforms, both 
using pulseaudio CLI scripts.
Modules explicitly loaded include instances of module-rtp-send, 
module-rtp-recv, module-null-sink,
module-remap-source, module-remap-sink and module-loopback.

This all works as far as it goes, but with VoIP (using 1 channel in each 
direction), we're finding
that the latencies make it pretty much unusable.  Ideally, I need to be 
able to put a reasonable
upper limit on total latency.

The link 
https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/Developer/Clients/LatencyControl/
provides instructions for use with the API, but I can't find much about 
controlling latency with CLI.
A few modules appear to have latency-related parameters I can tweak, but 
this seems to be pointless
because other modules are adding latency that I haven't worked out how 
to control.

Is there any way to do this?

Steve