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Bitcrusher

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Kiwisonic manual

Bitcrusher

Category: Shape | Scope: Instrument-level

Reduces sample rate and bit depth for retro, lo-fi sounds. Think old video game consoles and early digital hardware.

Macros

Macro Type What it does
Crush Knob (0–100 %) Intensity — controls both sample rate reduction and bit depth simultaneously. 0 % is subtle degradation, 100 % is extreme 8-bit crunch
Mix Slider (0–100 %) Balance between dry and crushed signal

Presets

Retro Console, Lo-Fi Radio, Glitch, Telephone.

How the settings work together

Crush reduces both the sample rate and the bit depth at the same time. Low values introduce a subtle graininess — the sound becomes slightly "crunchy" around the edges, like listening through old digital hardware. High values destroy the signal aggressively — you get staircase-shaped waveforms and aliasing artifacts that sound like retro video game audio. The effect is most noticeable on bright, complex sounds (cymbals, pads) and least noticeable on simple, low-frequency sounds (sine bass).

Mix is essential for keeping bitcrushing usable. At 100% mix, heavy crush turns everything into noise. Blending it back to 20–40% lets the original signal carry the melody and pitch while the crushed layer adds texture on top. This is how most lo-fi production uses bitcrushing — as a flavor, not a replacement for the original sound.

When to use it

Great for lo-fi beats, chiptune textures, or adding grit to drums and synths. Use the mix knob to blend it in subtly.