Since ETS2 uses FMOD, understanding the "Events," "Parameters" (like engine_rpm or exhaust_load ), and "Buses" within FMOD Studio is the actual science behind the mod.
You no longer just swap files. You create a .bank file that contains the logic for how sounds pitch-shift and cross-fade based on game telemetry. ETS2 Create sound mods
High-quality mods typically use 48kHz/24-bit samples to avoid artifacting when the game engine shifts the pitch up or down. Getting Started The Core Technical Resources If you are looking
The "gold standard" for this is the official documentation by SCS Software regarding the implementation. This is the definitive technical resource that replaced the old .ogg overwrite method and is what every "solid" modder uses today. The Core Technical Resources Since ETS2 uses FMOD
If you are looking for the most authoritative "papers" or guides, these three are essential:
Finding a formal academic "paper" on creating sound mods for Euro Truck Simulator 2 (ETS2) is tricky because most of the knowledge lives in developer documentation and community wikis rather than scientific journals.