Proudly introducing the Cummins Signature Sound & Engine Pack. All sounds were professionally recorded from a Peterbilt 379 which had 9-inch straight pipes and a 1000HP Cummins Signature 600 engine.

• Full engine sound set professionally recorded from the engine, intakes and exhausts.
• Complete engine RPM spectrum recorded, producing a very detailed sound.
• Authentic Interbrake sound includes 3 stages.
• 600 and 1000HP engines
• Support for over 90 trucks including all default trucks and popular modded trucks such as the Rollin 389, Jon-Ruda W900 etc.
• Open Definition files for modders.
• Full support for Convoy mode.
• Includes Zeemod's "In Sound We Trust" digital air fresheners for you to install in your truck!

4th Generation of Sound (G4)


Zeemod’s 4th generation of sound includes the following key features and techniques. 


Dynamic Volume Control
This means that the volume of the engine, intake, turbo and exhaust will fade over distance and each sound emitter is placed in a believable location on the truck. 


Dynamic Sound Effects
This means various dynamic effects are applied to the exhaust sound to simulate the engine take load. You’ll hear the exhaust note change as the throttle is pressed and will sound different depending on how heavy your truck/load combination is. 


Directional Sound Control
This means that the volume and/or pitch of a sound will change depending on the location of the listener (eg, the player’s camera). For example, if the player’s camera is at the front of the vehicle, you will mostly hear the engine sounds, whilst if the player’s camera was at the rear of the vehicle, you’d mostly hear the exhaust sounds.


Dual Exhaust & Full-Fidelity Sounds.
This means that a single exhaust pipe was recorded with either two microphones or two exhausts had their own independent microphones recording the sound. These sounds are then implemented into the game in a dual-channel, simulating the different sounds captured from each exhaust pipe independently. 

And each microphone placed in the engine bay, for example, has its own independent sounds playing in-game instead of being combined into a single channel sound. This produces a rich, full-fidelity sound, ideal for those audiophiles.

Multi-stage Jake or Interbrake system.
This means that you can toggle each Jake or Interbrake stage and each stage will have its own unique sound. Zeemods was the first to introduce this feature to ATS, as far as we know.

Disclaimer:

Whilst every effort is made to ensure the sounds are accurate as possible, updates to the platform (ATS or ETS2) can make undesired or unexpected changes to the audio system that could cause the sounds to no longer sound as they originally did. Additionally, the sound may not always sound exactly the same on your PC as it does in a promotional video. It is important that you read the included documentation to ensure that your sounds are configured properly to prevent this from happening. Furthermore, it is not advised to compare the sounds from these sound packs with Youtube videos of real vehicles because Youtube videos are heavily compressed, and generally speaking, are recorded with low-quality microphones on handheld devices. Sound packs provided by Zeemods are recorded with 6 to 8 movie-quality microphones and will invariably record a much larger frequency range than a handheld device. Due to the complexity of the sounds, Convoy mode will contain a simplistic version of the engine sounds which will play remotely on other player vehicles.