Ptolemy's Diatonic Ditoniaion

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

Diatonic - Claudius Ptolemy

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Ancient Greek Tuning System Author: Claudius Ptolemy Period: Ancient Greece (c. 100-170 CE) Genus: Diatonic Reference: Table 19, murray_text_02_greek.md The 'ditonic' tuning - identical to Eratosthenes' Diatonic and the classic Pythagorean tuning. Named for its major third (ditone) consisting of two equal tones (9/8). Octave span: E to E Tetrachord structure: Two tetrachords with disjunctive tone B-A (9/8)

Playback

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Overview (non-12°)

Degrees (now extended to 2 octaves)

#	Raw	Type	Ratio	Cents
2	256/243	ratio	256/243	90.00
3	9/8	ratio	9/8	294.00
4	9/8	ratio	9/8	498.00
5	9/8	ratio	9/8	702.00
6	256/243	ratio	256/243	792.00
7	9/8	ratio	9/8	996.00
8	9/8	ratio	9/8	1200.00
8		2nd octave		1290.00
9		2nd octave		1494.00
10		2nd octave		1698.00
11		2nd octave		1902.00
12		2nd octave		1992.00
13		2nd octave		2196.00
14		2nd octave		2400.00