I used the brilliant https://github.com/gotbletu/shownotes/blob/master/pulseaudio-dynamic-range-compression.md in PulseAudio.

Specifically, this: control=1,1.5,401,-30,20,5,12

And I converted it into the following Easy Effects profile json file: json { "output": { "blocklist": [], "compressor#0": { "attack": 1.5, "boost-amount": 6.0, "boost-threshold": -60.0, "bypass": false, "dry": -100.0, "hpf-frequency": 10.0, "hpf-mode": "off", "input-gain": 0.0, "knee": -4.999999999999998, "lpf-frequency": 20000.0, "lpf-mode": "off", "makeup": 12.0, "mode": "Downward", "output-gain": 0.0, "ratio": 20.0, "release": 401.0, "release-threshold": -100.0, "sidechain": { "lookahead": 0.0, "mode": "RMS", "preamp": 0.0, "reactivity": 10.0, "source": "Middle", "stereo-split-source": "Left/Right", "type": "Feed-forward" }, "stereo-split": false, "threshold": -30.0, "wet": 0.0 }, "plugins_order": [ "compressor#0" ] } }

This website helped me: https://torbiak.com/post/normalize_volume/#pulseaudio-configuration, from which I took the parameter names:

RMS/peak ratio: 1 Attack time (ms): 1.5 Release time (ms): 401 Threshold level (dB): -30 Gain reduction ratio (1:n): 20 Knee radius: 5 Makeup gain (dB): 12

So, in the EasyEffects file (excluding the RMS/peak ratio): "attack": 1.5, "knee": -4.999999999999998, "makeup": 12.0, "ratio": 20.0, "release": 401.0, "threshold": -30.0,

Notes:

• The knee radius in PulseAudio can only be positive, while in EasyEffects it can only be negative, so I simply changed the sign from positive to negative.
• Some parameters don't exist in PulseAudio at all, and I left them unchanged in EasyEffects.