This is crucial for immersion. When you perform a boost, the engine layers a "wind drag" sound over these footsteps, creating a Doppler effect that tricks your brain into perceiving 100+ MPH speed, even if the actual camera angle suggests otherwise.
: This official DLC added a "Juke Box" feature and refined various audio cues to improve the game's flow, as discussed in Fast Facts .
Guardians emit deep, directional low-frequency rumbles, allowing players to track massive threats by ear. The Verdict on Sonic Frontiers SFX