Sound Cones in FSX
Looking at FSX sound.cfg, there are some new lines of code that control the sound cones:
InsideConeAngle=90 OutsideConeAngle=270 ConePitch=0.000000 ConeHeading=0.000000 OutsideConeVolume=9600
The size of the inner cone (sound is played at full volume while the listener is inside this angle), range is 0 to 360
The size of the outer cone (the volume is attenuated beginning at the end of the inside cone up to the end of the outside cone), range is 0 to 360 and it needs to be larger than the InsideConeAngle.
Pitch (direction up or down) in degrees, of the cone. Range is -180 to 180
The direction the cone is pointing, range is 0 to 360 (might be 1 to 360 – I’ll have to check on that…)
Volume of the sound at the end of the outside cone. This sets the rolloff between the end of inside and end of outside cones. The range is 0 to 10000, which is misleading – a setting below 9000 is impractical in almost all cases. If it’s set to zero, the sound is inaudible almost immediately beyond the range of the inside cone. Getting this setting right requires a lot of experimentation.
Here is how it is set for one of the sound nodes on the 737:
InsideConeAngle=90 OutsideConeAngle=270 ConePitch=0 ConeHeading=0 OutsideConeVolume=9000
Basically, this sound is projecting straight forward from the engine. It plays at full volume in a 90 degree cone around the center point, and then attenuates between 90 and 270 degrees. Outside the outer cone, the sound stays at the “9000” volume setting (which translates to “very quiet, but not quite silent”).
--Owenhewitt 16:39, 30 September 2006 (CEST)