When Sonic parries a laser, the sound isn't a shield plink . It’s a digital void —a sudden, sharp cut in the frequency spectrum, as if the game itself skipped a frame. This isn't an accident. The SFX team is signaling that the Starfall Islands are a corrupted OS, and Sonic is a debugger.

The soundtrack is widely considered one of the strongest elements of Sonic Frontiers :

: The most iconic new sound is the digital "hum" and final "shimmer" of the Cyloop ability, which changes pitch as Sonic completes a circle.

: Enemies and Guardians have mechanical, glitchy audio cues that warn players of incoming attacks. These SFX often feature digital distortion to emphasize their "Cyber Space" origins.

The menus sound like interfacing with the Ancients' technology.