Kees van Prooijen
# Kees van Prooijen

Kees (Cornelis) van Prooijen (born 7 August 1952) is a creator of computer art. Although it does not bear his name, he independently discovered the Bohlen-Pierce scale, a non-octave-repeating scale based on the tritave and spectra containing odd harmonics, in 1978. Van Prooijen came across the scale through an investigation of continued fractions.

He also invented the Kees height, or an "expressibility" measure for complexity of just intonation pitch classes.

## Sources

* ↑ Kees van Prooijen Homepage
* ↑ Kees van Prooijen: "A Theory of Equal-Tempered Scales". Interface, Vol. 7 (1978), pp. 45–56. Swets & Zeitlinger B.V. – Amsterdam.
* ↑ Kees van Prooijen. "13 tones in the 3rd harmonic", kees.cc.
* ↑ "What Were They Investigating?", Bohlen-Pierce Site.
* ↑ Sethares, William A. (2005). Tuning, Timbre, Spectrum, Scale, p.74. ISBN 9781846281136.
* ↑ Schroeder, Manfred. "Music and Mathematics", p.14. Nova Acta Leopoldina N.F. 92, Nr. 341, ISBN 3-8047-2237-7 (Halle, 2005), pp. 9–15.
* ↑ "Kees+height", on Xenharmonic Wiki.
* ↑ "Kees+van+Prooijen", on Xenharmonic Wiki.
