Overdrone

A drone built from one note's harmonic series. The centre of the sound drifts from partial to partial while the rest fade away by distance. Each partial is lifted about forty octaves into visible light, so you can see the chord as colour.

16 partials

Starting note

Octave A = Partials

Light field

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Gradient

Colours are true wavelengths. Partials 1, 2, 4, 8 and 16 share a colour because octaves map to the same light.

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Sounding

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Ratio to root

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As light

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Colour

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Scenes ready-made series

Saved scenes keep the root, motion, voice, filter, space and drum pattern in this browser.

Motion how the centre moves

Path

Shift every

Move by

Glide

Tempo

Next shift—

Voice the partials

Falloff from centre

Root anchor

Shimmer

Chorus

Stereo spread

Tuning

Filter drag to play the filter

Left–right opens the filter, up adds resonance. Coloured lines are the partials; the curve is what the filter lets through.

Type

Track centre

Sweep rate

Sweep depth

Space reverb and delay

Reverb

Reverb mix

Delay time

Free time

Feedback

Delay mix

Note divisions follow the tempo.

Master volume

Space play / fade← → move centreF full screenG next gradientR randomize1–6 scenes

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Scenes ready-made series

Motion how the centre moves

Voice the partials

Filter drag to play the filter

Space reverb and delay

Read more sound and light

Spectral pulse a drum machine folded inside the prism