Cleansix Raw

Cleansix Raw is the free, one-knob cleanup tool that makes anything sound clearer in seconds — no EQ hunting, no plugin chains. Turn the single CLEAN knob and a dynamic notch engine detects harsh resonances, boxiness, and ringing frame by frame and pulls them down in real time, so vocals, drums, synths, and the full mix open up. The output is auto-leveled, so your track just gets cleaner, never quieter.

STFT resonance detection — a windowed FFT flags bins that stand well above both their spectral neighbours and their recent history within a 200 Hz to 12 kHz range; detection is analysis only, with no resynthesis.

Dynamic IIR notch bank — detected peaks are matched to notch slots by frequency and pulled down with peaking/notch biquads, using fast-attack, slow-release smoothing and a hysteresis gate so only persistent resonances engage.

Transient protection — a per-sample transient detector gates the notches off on attacks, so percussive hits stay sharp, and total suppression is soft-capped so the engine never guts the signal.

Constant, reported latency — a short constant 2 ms lookahead protects transients and is reported to the DAW for delay compensation, and nothing the macro touches changes the FFT size or lookahead, so the reported latency never moves mid-stream.

One knob, hidden targets — CLEAN is the only host-automatable parameter; every Pro parameter is present internally but wrapped as non-automatable, still saved and restored with the session.