Terpstra Isomorphic Keyboard

4 months ago 3

Tuning\Layout Quick Links Fundamental (Hz)

Right Facing Steps Up/Right Facing Steps

Hex Size (pixels) Rotation (degrees)

Instrument Enumerate Scale Use Spectrum Colors Blank Keys (No labels)

Scale (Scala format)

Steps To Equivalence Interval

Color Layout


Designed by Siemen Terpstra in the late ’80’s. WebApp developed by James Fenn with additions and modifications by Brandon Lewis, Bo Constantinsen and Chengu Wang. Credits to Scott Thompson and Dr Ozan Yarman for contributing samples. Current version 1.5.2 (Jan. 2015 — May 2019), released as Free/Libre and Open Source Software under GPL-3.0. Download, fork, and get your name down here by fixing issues and implementing features via GitHub!

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