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RESONON

Correct Recording Latency

Resonon measures the round trip through the interface and moves each take back by it, so a take lines up with what you heard while you played. Correct it by hand only when takes still land early or late. Recording & Latency explains the model.

Check the correction

Section titled “Check the correction”

audio_latency() reports what is in force; its keys are listed under audio_latency:

let lat = audio_latency();
show(lat["record_compensation_ms"]);   // what a take is corrected by
show(lat["output_ms"]);
show(lat["input_ms"]);

A smaller [audio] buffer_size shortens the round trip.

Measure the error

Section titled “Measure the error”
  1. Loop an output of the interface back into an input with a cable.
  2. Play a click, and record it through the loop.
  3. Compare where the recorded click lands with the click you played. The difference is the error.

Set the offset

Section titled “Set the offset”

Put the error in ~/.resonon/preferences.toml, then run reload_preferences():

[audio]
recording_offset_ms = 2.5    # takes arrive 2.5 ms later than measured

Positive means takes arrive later than measured, so each take starts further in; negative is for an interface that overstates its latency. Values beyond ±500 ms are refused. recording_offset() reads back what is in force:

show(recording_offset());
Section titled “Related”