graph 1
external tuning hum note, prime, minor tierce and nominal partials
(Equal Temperament, base +45 cents if A1=440 Hz)
Most of this tuning probably realized by Michiels in 1960.

graph 2
internal tuning hum, fundamental, minor tierce and quint partials
(equal temperament)

graph 3
internal tuning hum, prime, minor tierce and upper quint
(notice the extremely steady relation between minor tierce and upper quint!)

graph 4
internal tuning tierce and upper quint, upper octave, double quart

graph 5
internal tuning upper quint, upper octave, double quart and major triple sixth

graph 6
internal tuning upper octave, double quart and major triple sixth and triple octave

graph 7
internal tuning upper major tierce, upper quart I and upper quart II

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