This page provides links to independent web sites produced and maintained by each individual artist. Unless otherwise indicated, these materials are made freely available for artistic and educational purposes. Commercial use without explicit permission of the authors is not permitted.

HE fonts (download)
31-Limit Helmholtz-Ellis Calculator and Synth (Max patch)
HEJI/Johnston 31-Limit Harmonic Space Convertor and Calculator (web)

The Helmholtz-Ellis Notation
Fundamental Principles of Just Intonation and Microtonal Composition