Chroma

A color based synth app, Chroma takes color data from your camera, or imported animations, and maps it to midi notes using a choice of methods.

Optimised for Android, sorry, iOS is currently buggy.

Demo Patches:
The animations in the following demo patches are not mine… I found Hexeosis and Pi-slices on Tumblr:

Default patch – Arrange (pislices.ca)

Hexeosis patches

Hex Grid 1 – Hex Grid 2 – Hex Grid 3

Features:

Single note or poly mode
Upload or add the url of images or animations
Looping
Patch saving
MIDI In/Out/Sync
Dual Oscilators
LFO and looping envelope mod sources

Effects:

Driv e
Flanger
Chorus
Convolution Reverb

Filter Modes:

Biquad
SEM 2-Pole
Moog Ladder
Acid

With:

Lowpass
Highpass
Bandpass
Notch

Coming Soon:
Audio Exporting

Mapping Modes:
Scriabin – Uses Alexander Scriabin’s color-to-key correspondences as the basis for mapping hue values into musical pitch relationships.
Synesthesia – Maps hue, saturation, and brightness directly onto primary synthesis parameters such as pitch, amplitude, and filter position.
Information Theory – Derives control values from image-data properties such as contrast, brightness distribution, local variation, and entropy-like complexity.
Physics – Maps visible-spectrum relationships into synthesis controls using wavelength-inspired ordering and brightness-based intensity values.
Psychedelic – Applies nonlinear and exaggerated color transformations before routing the resulting values into synthesis parameters.