J.S.R.S. Mod is a Sound modification. This sounds less exciting at first than it is, doesn't it? Oh, but it is much more than
just your typical sound modification. Simply because not only does J.S.R.S. essentially offer toally new sounds for ArmA II,
but offers much more in that it also extends the game with new sound-based features in-game which were originally
though not possible.
The biggest feature is the "Distance script" that allows the mod to address different sound effects at different distances
to the player. The scenario: If a shooter is 500 meters away, one extra tuned value sound for this distance will be
played. This gives the impression of being far away of that shooter.
There are also effects like the "First Person sounds" which giving the impression that the weapon is close to your face
by adding mechanical extra sound effects which is only played when the player is playing in the first-person
perspective. The same works for vehicles. When sitting as a passenger in an armed vehicle, you can hear the
mechanical sounds of the weaponry.
http://www.youtube.com/watch?v=nsvUOUglpGU