REA22 Distant Motor Sound

Want to listen to the machines working in the field while tending the farm?
If yes, this is the mod for you!
This mod does:
- Increase the distance of motor, gearbox and retarder sounds.
- Decrease the volume and lowpass filter if the path to the sound source is blocked.
- Adds doppler effect if the source is moving relative to the camera.
Note. This mod only affect motor, gearbox and retarder sound.