13ed9/4

← 11ed9/4

13ed9/4

15ed9/4 →

Prime factorization	13 (prime)
Step size	107.993 ¢
Octave	11\13ed9/4 (1187.92 ¢) (semiconvergent)
Twelfth	18\13ed9/4 (1943.88 ¢)
Consistency limit	3
Distinct consistency limit	3

13ed9/4 is the equal division of 9/4 into 13 parts.

Scale tree

Ed9/4 scales can be approximated in EDOs by subdividing their approximations of 9/4.

Major ninth				Period	Notes
9\8				103.846	Intense Phrygian-Soft Aeolian mode ends, Soft Aeolian mode begins
	17\15			104.615
8\7				105.4945	Soft Aeolian mode ends, Flattone Aeolian mode begins
	15\13			106.509
		22\19		106.883	Flattone Aeolian mode ends, Meantone Aeolian mode begins
			29\25	107.077
7\6				107.692	Meantone Aeolian mode ends, Superpyth Intense Aeolian mode begins
		20\17		108.597
	13\11			109.09	Superpyth Intense Aeolian mode ends, Ultrapyth Intense Aeolian mode begins
		19\16		109.615
6\5				110.769	Ultrapyth Intense Aeolian mode ends