Half-Life DSP Sound EAX Reverb Effects
======================================
Configuration File Entry
------------------------
room_type "##"
waterroom_type "##"

Console Command
---------------
room_type ##
waterroom_type ##

Map Entity
----------
{
"origin" "x y z"
"roomtype" "##"
"radius" "###"
"classname" "env_sound"
}

Room Types
----------
 0 = Off (Disable All Filters)
 1 = Generic (No Filters)

 2 = Metal Small
 3 = Metal Medium
 4 = Metal Large

 5 = Tunnel Small
 6 = Tunnel Medium
 7 = Tunnel Large

 8 = Chamber Small
 9 = Chamber Medium
10 = Chamber Large

11 = Bright Small
12 = Bright Medium
13 = Bright Large

14 = Water 1 (Default waterroom_type)
15 = Water 2
16 = Water 3

17 = Concrete Small
18 = Concrete Medium
19 = Concrete Large

20 = Big 1
21 = Big 2
22 = Big 3

23 = Cavern Small
24 = Cavern Medium
25 = Cavern Large

26 = Weirdo 1
27 = Weirdo 2
28 = Weirdo 3