ptolemy_iast

Degrees: 7 • Period: 1200.00 cents • Source: Scala

File comments

! ptolemy_iast.scl ! ! Ptolemy's Iastia or Lydia tuning, mixture of Tonic Diatonic & Intense Diatonic

Playback

Select a tone, then click Begin. Use Arrow keys to step; Space stops. You can also use 1-0, qwertyuiop, asdfghjkl, zxcvbnm.

Overview (non-12°)

Degrees (now extended to 2 octaves)

#	Raw	Type	Ratio	Cents
1	28/27	ratio	28/27	62.96
2	32/27	ratio	32/27	294.13
3	4/3	ratio	4/3	498.04
4	3/2	ratio	3/2	701.96
5	8/5	ratio	8/5	813.69
6	9/5	ratio	9/5	1017.60
7	2/1	ratio	2/1	1200.00
8		2nd octave		1262.96
9		2nd octave		1494.13
10		2nd octave		1698.04
11		2nd octave		1901.96
12		2nd octave		2013.69
13		2nd octave		2217.60
14		2nd octave		2400.00