Loudness Compensation

Equal-loudness contour compensation (Fletcher-Munson). Adjusts frequency response based on playback volume to maintain perceived tonal balance.

Parameters

Low

Parameter	Type	Range	Default	Unit	Description
Low Freq	Float	20 .. 500	100	Hz	Low shelf center frequency
Low Gain	Float	-20 .. 20	6	dB	Low shelf boost/cut at low volume

High

Parameter	Type	Range	Default	Unit	Description
High Freq	Float	2000 .. 20000	8000	Hz	High shelf center frequency
High Gain	Float	-20 .. 20	6	dB	High shelf boost/cut at low volume

Mid

Parameter	Type	Range	Default	Unit	Description
Mid Enabled	Bool	On / Off	On	-	Enable mid-range compensation band
Mid Freq	Float	500 .. 8000	3500	Hz	Mid peak center frequency
Mid Gain	Float	-20 .. 20	3	dB	Mid peak boost/cut at low volume
Mid Q	Float	0.1 .. 5	0.707	-	Mid peak bandwidth (Q factor)

Auto Gain

Parameter	Type	Range	Default	Unit	Description
Auto Gain	Bool	On / Off	Off	-	Auto-normalize output level
Max Auto Gain	Float	0 .. 24	12	dB	Maximum auto gain correction
Smoothing	Float	1 .. 1000	100	ms	Auto gain transition time

Compensation

Parameter	Type	Range	Default	Unit	Description
Mode	Choice (Manual, ISO 226, Auto)	3 options	Manual	-	Manual 3-band or ISO 226 automatic contour
Playback Level	Float	40 .. 90	70	dB SPL	Current playback level — compensation adjusts for this level vs reference
Reference Level	Float	60 .. 100	83	dB SPL	Reference listening level (no compensation applied at this level)

Auto

Parameter	Type	Range	Default	Unit	Description
Playback Volume	Float	-80 .. 0	0	dB	Engine playback volume (set automatically by the engine)

Note

Structural parameters (Mid Enabled, Auto Gain, Max Auto Gain, Smoothing, Mode) require rebuilding the plugin when changed. Other parameters update in real-time with zero dropout.