v21.51

Sound of tire whine from the exterior view is now also simulated when you look outside the window at high speeds.
Improved low-range of open window wind sounds.
Increased mid-range of sleeper line sound dependent on current speed.

v21.50

Tweaked high speed tire sound (interior view).
Improved volume curves for window wind sounds.
Increased mid-range of sleeper line sound.

v21.49

Quietened interior tire sound for asphalt and sleeper line terrains.
Improved open window experience with better sound mix and quieter wind.
Improved fall-off for Boeing 737 flyby sound.

v21.48

Improved air brake sounds can now sometimes be heard when any bus or truck in AI traffic comes to a stop.
Replaced the air gear sound for AI traffic trucks. It can sometimes be heard when the AI traffic truck changes gear.
Replaced 1 default air brake sound effect.
Added 1 default air brake sound effect.
Quietened Boeing 737 taxiing sound in scenarios where there are multiple planes taxiing in the same airport.
Reduced range of Boeing 737 taxiing sound.

v21.47

New version of trailer brace rotation sounds.
3D positioned trailer brace rotation sounds.
Engine sounds added for the Mercedes-Benz C-Class (W204 2008) in AI traffic.
Minor sound mix tweaks for default AI car tire sounds.
Optimizations for sound files without quality loss.

v21.46

Added 1 new sound variant for when coupling trailer.
3D positioned and enhanced the trailer coupling sounds.
Engine and horn sounds added for the Honda Accord (8th generation) in AI traffic.
Horn sound added for the Audi A6 (C6 generation) in AI traffic.
Optimizations for sound files without quality loss.

v21.45

Engine sounds added to the Harley Davidson Fat Boy in the Motorcycle Traffic Pack by Jazzycat.
Applied Harley Davidson Fat Boy sounds as the default motorcycle sound in the Motorcycle Traffic Pack by Jazzycat.
Volume balance tweaks for the BMW S1000RR in the Motorcycle Traffic Pack by Jazzycat.

v21.44

Added engine sounds to the Land Rover Range Rover (L322 generation) in AI traffic.
Optimizations for sound files without quality loss.

v21.43

Added standalone air horn that you can add to your truck, with realistic attenuation outside and cabin vibration inside.
Recommended audio settings text file updated.

v21.41

Added engine sound to the Audi A6 (C6 generation) in AI traffic.