CHORD CANVAS

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CHORD TIMELINE — NEW CHORDS APPEAR AT RIGHT, SCROLL LEFT

CHROMAGRAM — PITCH CLASS ENERGY (ALL OCTAVES)

HOW IT WORKS

FFT → 12-bin chroma vector: pitch-class energy, all octaves summed

Template-match against 24 major/minor chord templates (weighted dot product)

Hue = root note — C=red · D=yellow · G=blue · A=violet

Saturation: major = vivid · minor = muted

Hold a chord for ≥0.5 s for reliable detection. Piano, guitar, voice — any pitched source. No ML. Pure signal processing.