OPENBCI × SUPERCOLLIDER, REIMAGINED

Hear a brain
change its mind.

This browser sketch generates a plausible eight-channel EEG signal, separates it into familiar frequency bands, and turns those features into a living soundscape.

A creative simulation—not a medical or scientific instrument.

Simulated signal

A calm, wakeful rhythm with a clear alpha peak.

GENERATING

+100 μV0−100 μV

O1 — OCCIPITAL

−4 sec−3−2−1now

Choose the musical logic

Combine documented sonification ideas, then give them a sound world

SONIFICATION METHODS · SELECT ONE OR MORE Band-power arrangementEEG bands shape density, brightness and space—not raw oscillators Scale-free melodyAmplitude selects pitch; wave period shapes note length Pentatonic eventsStrong events become consonant, spatially separated notes OpenBCI rewardCrossing a target threshold reveals a distinct reward tone

MUSICAL WORLD

Tonal gravity 80% minor

Wave shape Center octave

Default chord voicing Tempo 48 BPM Melody activity 70% Notes per beat Rhythmic character

Leadmotif Low guideground Answercounterline Visitorrare accent

Attack 1.50 s Release 3.00 s

LIVE MELODY DECISION

FEATUREAlpha 82%→RULEPentatonic event→CHOICED4 · chord tone

Sampled slowly; held inside the current harmony to prevent EEG jitter becoming musical jitter.

The translation

Five bands conduct the arrangement

What you’re hearing