Ptolemy's Chromatic Syntonon

SCL Detail

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

Chromatic - Claudius Ptolemy

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Ancient Greek Tuning System Author: Claudius Ptolemy Period: Ancient Greece (c. 100-170 CE) Genus: Chromatic Reference: Table 11, murray_text_02_greek.md Ptolemy's 'tense' chromatic tuning, constructed entirely of superparticular proportions. Octave span: E to E Tetrachord structure: Two tetrachords with disjunctive tone B-A (9/8)

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
2	22/21	ratio	22/21	81.00
3	12/11	ratio	12/11	231.00
4	7/6	ratio	7/6	498.00
5	9/8	ratio	9/8	702.00
6	22/21	ratio	22/21	783.00
7	12/11	ratio	12/11	933.00
8	7/6	ratio	7/6	1200.00
8		2nd octave		1281.00
9		2nd octave		1431.00
10		2nd octave		1698.00
11		2nd octave		1902.00
12		2nd octave		1983.00
13		2nd octave		2133.00
14		2nd octave		2400.00