DnB bass stacks a sine wave sub with harmonics above the fundamental for low-end fullness

DnB bass design typically begins with a heavy sine wave sub-bass or 808-style bass to fill the lower end of the frequency range. Above this fundamental, a series of harmonics are added — this is what makes the bass audible on systems that cannot reproduce the fundamental (small speakers, headphones) while still delivering physical weight on sub-capable rigs. The track key dictates the fundamental frequencies. Mid-range processed basslines are sometimes incorporated separately to contribute additional character above the sub. This sub + harmonics stack architecture is why DnB bass sounds full-range rather than just muddy low-end.

Examples

In a DAW, layer a sine wave bass note at the root frequency with a mid-bass patch an octave up. Solo the sub on a subwoofer: hear the weight. Solo the mid-bass on laptop speakers: hear the presence. Together they cover the full range of listening systems.

Assessment

Explain why DnB bass layers a sub sine wave with harmonics rather than using just one. How does the track key affect the bass design? What purpose does a separate mid-range bass serve?