Passenger Occulsion help

I been for days now trying to figure out how to completely muffle out the sounds from the passenger view of the outside. I only manage to muffle out a bit but i can still here the generator from my P42DC Locomotive. What values do I need to change to drown out all the sounds from the outside except for the horn? Thanks in advance
- Code: Select all
<?xml version="1.0" encoding="utf-8"?>
<cBlueprintLoader xmlns:d="http://www.kuju.com/TnT/2003/Delta" d:version="1.0">
<Blueprint>
<cCabOcclusionBlueprint>
<Occlusion d:type="sInt32">-9000</Occlusion>
<OcclusionLFratio d:type="sFloat32" d:alt_encoding="000000000000E83F" d:precision="string">0.75</OcclusionLFratio>
<OcclusionRoomRatio d:type="sFloat32" d:alt_encoding="000000000000E03F" d:precision="string">0.5</OcclusionRoomRatio>
<OcclusionDirectRatio d:type="sFloat32" d:alt_encoding="000000A09999D93F" d:precision="string">0.4</OcclusionDirectRatio>
</cCabOcclusionBlueprint>
</Blueprint>
</cBlueprintLoader>