Definitions of tuning terms
© 1998 by Joseph L. Monzo
All definitions by Joe Monzo unless otherwise cited
harmonic entropy
A concept developed by Paul Erlich, measuring
the dissonance of an interval based on the uncertainty
involved in interpreting that interval in terms of
an integer ratio.
The underlying mathematics, adapted from Van Eck, appear
to confirm Partch's Observation One.
Harmonic entropy is intended to be a second
component in measuring the sonance
of an interval, alongside roughness.
Erlich's actual term is relative harmonic entropy,
but the shorter designation has already become standard.
see Erlich's posting
on harmonic entropy, with my commentary.
see Partch 1974, Genesis of a Music, for additional
information on his Three Observations.
[from Joe Monzo, JustMusic: A New Harmony]
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