JI approximation of 22et and LCMs of periods

Here are some JI approximations for 12, 22, 34, and 46 et.

1/1 18/17 9/8 6/5 5/4 4/3 7/5 3/2 8/5 5/3 7/4 17/9

1/1 32/31 16/15 11/10 8/7 7/6 6/5 5/4 9/7 4/3 11/8 7/5 19/13 3/2
14/9 8/5 5/3 12/7 7/4 9/5 15/8 31/16

1/1 49/48 25/24 17/16 13/12 10/9 9/8 15/13 7/6 6/5 11/9 5/4 9/7
13/10 4/3 19/14 18/13 7/5 13/9 28/19 3/2 23/15 11/7 8/5 13/8 5/3
17/10 7/4 23/13 9/5 11/6 15/8 23/12 49/25

1/1 67/66 34/33 23/22 17/16 14/13 11/10 10/9 9/8 8/7 7/6 13/11
6/5 17/14 21/17 5/4 14/11 9/7 21/16 4/3 23/17 11/8 7/5 17/12 10/7
16/11 37/25 3/2 29/19 17/11 11/7 8/5 13/8 23/14 5/3 22/13 12/7
7/4 16/9 9/5 11/6 13/7 15/8 21/11 33/17 65/33

These are generated by the FasTrak utility, et. It uses Euclid's
algorithm to find the closest small number rational approximation
to a given interval.

By the way, in regards to the discussion about LCMs of periods of
chords, I wrote a program that generated a minimum chord pattern
based on minimum LCMs of periods, and then used FasTrak to
compose a small piece based on that minimum LCMs of periods
pattern. Then I used the automatic harmony feature of FasTrak to
convert the piece to a minimum LCMs of frequency harmonization.
I couldn't say that there was no difference between the pieces,
but, to my ear, it didn't seem that one was markedly more
consonant than the other.

Marion



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