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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