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Club effect

Bassline Spectrum

Bassline Spectrum is a club lighting look in FRCTL, the browser VJ studio. Hue-banded poster color keyed by luminance.

Runs live on video, images, a camera or generated art. Stack it with any other effect, and route LFOs, envelopes or any of ten audio bands to its controls so it moves with the music.

Try Bassline Spectrum free All effects

The untouched demo art: an eye inside a triangle over wavy teal, blue and peach lines — Source

The eye-in-triangle posterised into flat bands of purple and lime green — Bassline Spectrum, default settings

What Bassline Spectrum does

Posterises the picture into brightness steps and gives each step its own flat hue, crossfaded with a smooth rainbow ramp. Bands sets how many steps, from coarse blocks to fine contour bands, Tone mixes the rainbow ramp over the flat poster hues, and Direction tilts the hue slightly across the frame, either out from the centre or along an edge.

Using Bassline Spectrum

Where it works: Poster-style cover art and screen-print flyers, since tone collapses into flat hue steps. On footage the steps crawl as brightness changes, which works well on a crowd shot.
With the music: The name is a look, with no link to the bass. Send B2 (sub bass) to Bands so the poster steps multiply on long bass notes, or put an LFO on Tone to fade between flat and rainbow.
Starting point: Blend three-quarters, Bands centre, Tone centre, Direction Up, then raise Bands for contour lines or lower it for chunky blocks.

Controls

Blend: Strength of the filter vs source.
Bands: Luminance band quantization density.
Tone: Spectrum vs poster crossfade.
Direction: Which way the hue tilts across the frame.

Pairs well with Bassline Spectrum