Uplink format on both desktops: 10 ms mono frames (was 20 ms stereo),
Opus Voip at 48 kbps with in-band FEC against 10 % assumed loss — half
the frame-fill latency, half the samples, and a lost datagram's audio
now rides in its successor. One datagram per frame, unchanged wire.
Linux: the capture stream finally asks for its own quantum
(NODE_LATENCY 480/48000) instead of inheriting the graph's 1024-2048
sample bursts, and when the user picked no mic it prefers an existing
echo-cancel source over the default (PUNKTFUNK_NO_AEC=1 opts out;
loading module-echo-cancel ourselves needs a load_module the pipewire
crate doesn't expose yet). Windows: the capture client declares
AudioCategory_Communications before Initialize so an endpoint's
communications APO (the system AEC) can engage; capture stays stereo
via autoconvert — the proven path — and downmixes to mono in code.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
enricobuehlerandClaude Fable 5
d17e942db0