Trap sonic character comes from the interaction of three elements: 808 sub-bass, hi-hat pattern, and snare placement. Understanding this explains why MBM output sounds produced instead of random.
The 808 sub-bass: Tuning the 808 maps bass to musical notes, so it can carry melodic movement instead of only pulse. According to ISMIR, strong energy below 80 Hz is a clear spectral marker in trap production.
Hi-hat triplet patterns: Trap often relies on triplet subdivisions inside the hi-hat line to create its rolling machine-gun feel without changing BPM.
Snare placement and half-time feel: Standard trap keeps the snare on beats 2 and 4. Half-time sections move it to beat 3, creating slower perceived motion while preserving impact.