low-latency pulseaudio pipeline using --input-buffer #4
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By default buffer size computation leads to (very) significant latencies (up to 2 sec) A confidential solution for the happy fews is to rely on the PULSE_LATENCY_MSEC environment variable. This commit publicly exposes pulseaudio in/out buffers by binding them to `sox --[input]-buffer` options. With `sox --input-buffer=40000 -t pulseaudio default -t pulseaudio default` you now get a low-latency pipeline. Notes: * Since --input-buffer defaults to 0, the default (high-latency) behavior stays unchanged (if PULSE_LATENCY_MSEC isn't set) * Since --buffer default to 8192 and can't be set to 0, it'll now have priority over PULSE_LATENCY_MSEC (for the playback stream)
willofpath
approved these changes
Aug 6, 2024
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sox -t pulseaudiodepends upon pulseaudio buffering.By default buffer size computation leads to (very) significant latencies (up to 2 sec)
A confidential solution for the happy fews is to rely on the PULSE_LATENCY_MSEC environment variable.
This commit publicly exposes pulseaudio in/out buffers by binding them to
sox --[input]-bufferoptions.With
sox --input-buffer=40000 -t pulseaudio default -t pulseaudio defaultyou now get a low-latency pipeline.Notes:
Since --input-buffer defaults to 0, the default (high-latency) behavior stays unchanged
(if PULSE_LATENCY_MSEC isn't set)
Since --buffer default to 8192 and can't be set to 0, it'll now have priority over
PULSE_LATENCY_MSEC (for the playback stream)