4L 13s

↖ 3L 12s	↑ 4L 12s	5L 12s ↗
← 3L 13s	4L 13s	5L 13s →
↙ 3L 14s	↓ 4L 14s	5L 14s ↘

Scale structure
Step pattern	LsssLsssLsssLssss ssssLsssLsssLsssL
Equave	2/1 (1200.0 ¢)
Period	2/1 (1200.0 ¢)
Generator size
Bright	4\17 to 1\4 (282.4 ¢ to 300.0 ¢)
Dark	3\4 to 13\17 (900.0 ¢ to 917.6 ¢)
TAMNAMS information
Related to	4L 5s (gramitonic)
With tunings	3:1 to 1:0 (hard)
Related MOS scales
Parent	4L 9s
Sister	13L 4s
Daughters	17L 4s, 4L 17s
Neutralized	8L 9s
2-Flought	21L 13s, 4L 30s
Equal tunings
Equalized (L:s = 1:1)	4\17 (282.4 ¢)
Supersoft (L:s = 4:3)	13\55 (283.6 ¢)
Soft (L:s = 3:2)	9\38 (284.2 ¢)
Semisoft (L:s = 5:3)	14\59 (284.7 ¢)
Basic (L:s = 2:1)	5\21 (285.7 ¢)
Semihard (L:s = 5:2)	11\46 (287.0 ¢)
Hard (L:s = 3:1)	6\25 (288.0 ¢)
Superhard (L:s = 4:1)	7\29 (289.7 ¢)
Collapsed (L:s = 1:0)	1\4 (300.0 ¢)
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4L 13s is a 2/1-equivalent (octave-equivalent) moment of symmetry scale containing 4 large steps and 13 small steps, repeating every octave. 4L 13s is a grandchild scale of 4L 5s, expanding it by 8 tones. Generators that produce this scale range from 282.4 ¢ to 300 ¢, or from 900 ¢ to 917.6 ¢.

Scale properties

This article uses TAMNAMS conventions for the names of this scale's intervals and scale degrees. The use of 1-indexed ordinal names is reserved for interval regions.

Template:MOS data is deprecated. Details: Please use the following templates individually: MOS intervals, MOS genchain, and MOS mode degrees

Scale tree

Scale tree and tuning spectrum of 4L 13s

Generator(edo)						Cents		Step ratio		Comments
						Bright	Dark	L:s	Hardness
4\17						282.353	917.647	1:1	1.000	Equalized 4L 13s
					21\89	283.146	916.854	6:5	1.200
				17\72		283.333	916.667	5:4	1.250
					30\127	283.465	916.535	9:7	1.286
			13\55			283.636	916.364	4:3	1.333	Supersoft 4L 13s
					35\148	283.784	916.216	11:8	1.375
				22\93		283.871	916.129	7:5	1.400
					31\131	283.969	916.031	10:7	1.429
		9\38				284.211	915.789	3:2	1.500	Soft 4L 13s
					32\135	284.444	915.556	11:7	1.571
				23\97		284.536	915.464	8:5	1.600
					37\156	284.615	915.385	13:8	1.625
			14\59			284.746	915.254	5:3	1.667	Semisoft 4L 13s
					33\139	284.892	915.108	12:7	1.714
				19\80		285.000	915.000	7:4	1.750
					24\101	285.149	914.851	9:5	1.800
	5\21					285.714	914.286	2:1	2.000	Basic 4L 13s Scales with tunings softer than this are proper
					21\88	286.364	913.636	9:4	2.250
				16\67		286.567	913.433	7:3	2.333
					27\113	286.726	913.274	12:5	2.400
			11\46			286.957	913.043	5:2	2.500	Semihard 4L 13s
					28\117	287.179	912.821	13:5	2.600
				17\71		287.324	912.676	8:3	2.667
					23\96	287.500	912.500	11:4	2.750
		6\25				288.000	912.000	3:1	3.000	Hard 4L 13s
					19\79	288.608	911.392	10:3	3.333
				13\54		288.889	911.111	7:2	3.500
					20\83	289.157	910.843	11:3	3.667
			7\29			289.655	910.345	4:1	4.000	Superhard 4L 13s
					15\62	290.323	909.677	9:2	4.500
				8\33		290.909	909.091	5:1	5.000
					9\37	291.892	908.108	6:1	6.000
1\4						300.000	900.000	1:0	→ ∞	Collapsed 4L 13s

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