Notes"The Pythagorean Lambdoma Harmonic Keyboard, designed by mathemetician Barbara Hero, is an unusual MIDI controller that’s based on ancient concepts and fundamental harmonic relationships between notes.
The keyboard is based on the Lambdoma Matrix, a mathematical grid attributed to the philosopher Pythagoras. The Matrix plots whole-number ratios, with whole numbers along on side (1,2,3,4….) and their inverse fractions (1/1, 1/2, 1/3, 1/4….) along the other."Unfurl