Viscount Cantorum Dou User Manual page 99

User Manual
CHAUMONT
A meantone temperament; the wolf fifth has been
improved by enlarging the fifths on Eb and Bb. There
are six pure major thirds: F, C, G, D, A, E. The third
major on B, although not very pleasant, can still be
used.
KELLNER 1975
This tuning was created by Kellner, who figured out its
structure from the symbols on the first page of the
"Wohltemperierte Klavier" by Bach, 1722. The tuning
is based on five fifths, each reduced of 1/5 of
Pythagorean comma. This originates three Pythagorean
major thirds, on: C#, F#, G#. None of the thirds is
pure. The major third closer to being pure is on C.
KIRNBERGER III (KIRNBERGER3 on display)
Based on four fifths, each one reduced by ¼ of
syntonic comma, and one fifth reduced of the
remaining skisma. There is only one pure major third on
C. From most to least pure, they are G, D, A and F, Bb,
Eb. E, B and F# are equivalent one with the other.
Pythagorean major thirds are on C# and G#. Pieces
with many alterations are well characterised.
EN - 43