Source Audio Spectrum Filter — MIDI Editor & CC Reference
Control the Source Audio Spectrum Filter from your browser — full MIDI CC reference for 5 parameters, interactive editor, and AI-generated presets. Free, no install.
Nitelite gives the Spectrum Filter a full browser-based control surface: turn every knob, flip every switch, describe the tone you want to the AI Tone Terminal, and save the results — all sent to the pedal live over MIDI (default channel 1). Works free in Chrome, Edge, Opera, or Brave — no install required.
Knobs
Control
MIDI CC
Description
INPUT
CC 1
Input signal level going to the processor. Turn down for active pickups, up for passive pickups. Calibrate until the center LED flashes red.
DEPTH
CC 3
Filter modulation depth — how wide the filter sweeps across the frequency spectrum. Higher values make the filter effect more prominent.
FREQ
CC 5
Frequency starting point of the filter modulation. Left = lower frequencies (darker), right = higher frequencies (brighter).
SPEED
CC 7
Envelope attack/decay speed (or LFO speed when using LFO modulation). Right = quick, snappy envelope; left = slower, more sweeping sound.
Alt / Secondary Knob Functions
Control
MIDI CC
Description
SENSE
CC 2
Envelope filter sensitivity — how reactive the filter is to incoming signal dynamics. Lower for a smoother, more relaxed envelope; higher for sharper response to lighter playing.
MIX
CC 4
Wet/dry mix balance between the natural dry tone and the affected wet signal. 50/50 mix is at roughly 12 o'clock.
RES
CC 6
Filter resonance (Q). Boosts the height of frequency peaks and deepens the notches in frequency cuts. Higher values create more pronounced, vocal-like filter sweeps.
VOL
CC 8
Master output volume. Unity gain is at approximately 12 o'clock.