I have searched
Setup: Desktop machine (Centos 7, PulseAudio 10.0), and a Raspberry Pi
2B (Raspbian (Debian) Buster PulseAudio 12.2) with DAC and speaker.
If I play a video point-to-point over TCP the synch is fine, but over
RTP (with latency_msec=1 on RPi) there is signifcant audio latency -
enough to be irritating.
If I add a second, identical RPi (although with Raspbian Stretch and
PulseAudio 12.2), the RTP sound is synchronous on each machine (but not
with the video).
This is on a small private wired LAN (Netgear GS724T V3), 1G to desktop,
100M to RPI.
I have set tsched=0 in order to eradicate pops and sprogs.
What can I do to reduce RTP latency?
I eventually want to connect a guitar, and would need realtime
loop-through, so no suggestions about increasing audio latency to obtain
lip-synch, please.
Tony
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