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containing 1 bell by Jan Tolhuys (1555) and 2 by Eijsbouts (1955) |
graph 1
external tuning hum note, fundamental, minor tierce and nominal
partials
(equal temperament, base -42 cents if A1=440 Hz)
graph 2
internal tuning hum, fundamental, minor tierce and quint
(related as equal tempered intervals to the nominal partials of
the individual bells)
graph 3
internal tuning hum, fundamental, minor tierce and quint-nominal
(related as equal tempered intervals to the nominal partials of
the individual bells)
graph 4
internal tuning minor tierce, quint-nominal, octave-nominal and
double fourth
(related as equal tempered intervals to the nominal partials of
the individual bells)
graph 5
internal tuning quint-nominal, octave-nominal, double fourth and
major triple-sixth
(related as equal tempered intervals to the nominal partials of
the individual bells)
graph 6
internal tuning octave-nominal, double fourth, major triple sixth
and triple octave
(related as equal tempered intervals to the nominal partials of
the individual bells)
graph 7
internal tuning major 10th, 1st perfect 11th, 2nd perfect 11th
(related as equal tempered intervals to the nominal partials of
the individual bells)
graph 8
external tuning hum notes (equal temperament, base -42 cents if
A1=440 Hz.)
showing that although this applies exclusively to the hum notes,
Van Bergen actually
did tune with quite reasonable accuracy!
