Sound: Filters – Arma 3

Filters

Every sound in the game is attenuated by a frequency Low Pass Filter, the frequency cutoff changes with distance.

Default filter is configured in CfgSoundGlobals, however it is possible to define a custom distance attenuation filter for each SoundSet using parameter distanceFilter.

All Distance Frequency Attenuation Filters must be configured in the base class CfgDistanceFilters.

parameter	unit/values	default	descriptions
type	Fitler Type name	"lowPassFilter"	type of filter (note: currently, there only Low Pass Filter is possible)
minCutoffFrequency	[Hz]	300	minimal cutoff frequency (see: Cutoff Frequency on Wikipedia))
qFactor	float (0..1)	1	slope of attenuation curve in frequency spectrum (see Q factor on Wikipedia
innerRange	[m]	100	radius of sphere with sound source in its' center within innerRange distance, no filter is applied
range	[m]	1500	radius of sphere with sound source in its' center outside the range distance, cutoff frequency of filtering stops at minCutoffFrequency
powerFactor	(0..100)	2	relationship between cutoff frequency and distance higher value means faster attanuation

class CfgDistanceFilters { class defaultDistanceFreqAttenuationFilter { type = "lowPassFilter"; minCutoffFrequency = 150; qFactor = 1; innerRange = 10; range = 1000; powerFactor = 32; }; };