Thursday, June 7, 2012

Kornerup Notes

http://anaphoria.com/kornerup.pdf
Here is the second page to a new file  http://anaphoria.com/kornerup.pdf which gives a nice comparison between Yasser and Kornerup whose series are maybe not as close as has been assumed. An unfortunately damaged excerpt of Kornerup can be found in this section
http://anaphoria.com/library.html
It is not clear off hand what Wilson means here by 7/6 meantone. Comments are welcome on this point.

1 comment:

Archivist/Cultural Liaison said...

This is forwarded from John Chalmers-
I may have the answer--.580265833 is the log2 of fifth (696.3190 cents) that yields a just 7/6 taken as D# 9 fifths up the
chain. I listed it in cents as the (3=7, 7/6 just) Negative System in my article on new temperaments in XH2. If one divides
696.3190 by 1200, you get .580265833. Erv gives this number at the top and calls it 7/6 meantone.

47/81 is a good approximation to the log2 of the fifth in question--it yields 266.6666666 instead of 266.8709056.
Also, this tuning can be described as the 9th root of 112/3.