165edt
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165 equal divisions of the tritave, perfect twelfth, or 3rd harmonic (abbreviated 165edt or 165ed3), is a nonoctave tuning system that divides the interval of 3/1 into 165 equal parts of about 11.5 ¢ each. Each step represents a frequency ratio of 31/165, or the 165th root of 3.
Intervals
Steps | Cents | Hekts | Approximate ratios |
---|---|---|---|
0 | 0 | 0 | 1/1 |
1 | 11.53 | 7.88 | |
2 | 23.05 | 15.76 | |
3 | 34.58 | 23.64 | 49/48, 51/50 |
4 | 46.11 | 31.52 | 37/36, 38/37, 39/38 |
5 | 57.64 | 39.39 | 30/29, 31/30 |
6 | 69.16 | 47.27 | |
7 | 80.69 | 55.15 | 22/21 |
8 | 92.22 | 63.03 | 39/37, 58/55 |
9 | 103.74 | 70.91 | 52/49 |
10 | 115.27 | 78.79 | 31/29, 47/44 |
11 | 126.8 | 86.67 | |
12 | 138.32 | 94.55 | 13/12 |
13 | 149.85 | 102.42 | 12/11 |
14 | 161.38 | 110.3 | 45/41 |
15 | 172.91 | 118.18 | 21/19 |
16 | 184.43 | 126.06 | |
17 | 195.96 | 133.94 | 47/42 |
18 | 207.49 | 141.82 | 44/39 |
19 | 219.01 | 149.7 | 42/37 |
20 | 230.54 | 157.58 | 8/7 |
21 | 242.07 | 165.45 | 23/20 |
22 | 253.59 | 173.33 | 22/19 |
23 | 265.12 | 181.21 | |
24 | 276.65 | 189.09 | 27/23, 34/29 |
25 | 288.18 | 196.97 | 13/11 |
26 | 299.7 | 204.85 | 44/37 |
27 | 311.23 | 212.73 | |
28 | 322.76 | 220.61 | 41/34, 47/39 |
29 | 334.28 | 228.48 | 40/33, 57/47 |
30 | 345.81 | 236.36 | |
31 | 357.34 | 244.24 | 43/35 |
32 | 368.86 | 252.12 | 26/21, 47/38 |
33 | 380.39 | 260 | |
34 | 391.92 | 267.88 | |
35 | 403.45 | 275.76 | 24/19 |
36 | 414.97 | 283.64 | 47/37 |
37 | 426.5 | 291.52 | 55/43 |
38 | 438.03 | 299.39 | 58/45 |
39 | 449.55 | 307.27 | 35/27, 48/37 |
40 | 461.08 | 315.15 | 30/23, 47/36 |
41 | 472.61 | 323.03 | 46/35 |
42 | 484.13 | 330.91 | 41/31, 45/34 |
43 | 495.66 | 338.79 | |
44 | 507.19 | 346.67 | 55/41 |
45 | 518.72 | 354.55 | 27/20, 58/43 |
46 | 530.24 | 362.42 | |
47 | 541.77 | 370.3 | 26/19, 41/30 |
48 | 553.3 | 378.18 | |
49 | 564.82 | 386.06 | |
50 | 576.35 | 393.94 | 46/33, 60/43 |
51 | 587.88 | 401.82 | 52/37 |
52 | 599.4 | 409.7 | 41/29, 58/41 |
53 | 610.93 | 417.58 | 37/26, 47/33 |
54 | 622.46 | 425.45 | 43/30 |
55 | 633.99 | 433.33 | |
56 | 645.51 | 441.21 | 45/31 |
57 | 657.04 | 449.09 | 19/13 |
58 | 668.57 | 456.97 | 25/17 |
59 | 680.09 | 464.85 | 40/27 |
60 | 691.62 | 472.73 | |
61 | 703.15 | 480.61 | 3/2 |
62 | 714.67 | 488.48 | |
63 | 726.2 | 496.36 | 35/23 |
64 | 737.73 | 504.24 | 49/32 |
65 | 749.26 | 512.12 | 37/24, 57/37 |
66 | 760.78 | 520 | 45/29 |
67 | 772.31 | 527.88 | |
68 | 783.84 | 535.76 | 11/7 |
69 | 795.36 | 543.64 | 19/12 |
70 | 806.89 | 551.52 | 43/27 |
71 | 818.42 | 559.39 | |
72 | 829.94 | 567.27 | 21/13 |
73 | 841.47 | 575.15 | 13/8 |
74 | 853 | 583.03 | 18/11 |
75 | 864.53 | 590.91 | |
76 | 876.05 | 598.79 | |
77 | 887.58 | 606.67 | |
78 | 899.11 | 614.55 | 37/22 |
79 | 910.63 | 622.42 | 22/13 |
80 | 922.16 | 630.3 | 46/27 |
81 | 933.69 | 638.18 | 12/7 |
82 | 945.21 | 646.06 | 19/11 |
83 | 956.74 | 653.94 | 33/19, 40/23 |
84 | 968.27 | 661.82 | 7/4 |
85 | 979.8 | 669.7 | 37/21 |
86 | 991.32 | 677.58 | 39/22, 55/31 |
87 | 1002.85 | 685.45 | |
88 | 1014.38 | 693.33 | |
89 | 1025.9 | 701.21 | 38/21, 47/26 |
90 | 1037.43 | 709.09 | |
91 | 1048.96 | 716.97 | 11/6 |
92 | 1060.48 | 724.85 | 24/13 |
93 | 1072.01 | 732.73 | 13/7 |
94 | 1083.54 | 740.61 | 43/23, 58/31 |
95 | 1095.07 | 748.48 | |
96 | 1106.59 | 756.36 | 36/19 |
97 | 1118.12 | 764.24 | 21/11 |
98 | 1129.65 | 772.12 | |
99 | 1141.17 | 780 | 29/15 |
100 | 1152.7 | 787.88 | 37/19 |
101 | 1164.23 | 795.76 | 47/24 |
102 | 1175.75 | 803.64 | |
103 | 1187.28 | 811.52 | |
104 | 1198.81 | 819.39 | 2/1 |
105 | 1210.34 | 827.27 | |
106 | 1221.86 | 835.15 | |
107 | 1233.39 | 843.03 | 51/25 |
108 | 1244.92 | 850.91 | 39/19 |
109 | 1256.44 | 858.79 | 31/15 |
110 | 1267.97 | 866.67 | |
111 | 1279.5 | 874.55 | 44/21 |
112 | 1291.02 | 882.42 | |
113 | 1302.55 | 890.3 | |
114 | 1314.08 | 898.18 | 47/22 |
115 | 1325.61 | 906.06 | 43/20 |
116 | 1337.13 | 913.94 | |
117 | 1348.66 | 921.82 | |
118 | 1360.19 | 929.7 | 57/26 |
119 | 1371.71 | 937.58 | |
120 | 1383.24 | 945.45 | 20/9 |
121 | 1394.77 | 953.33 | 47/21 |
122 | 1406.29 | 961.21 | |
123 | 1417.82 | 969.09 | 34/15 |
124 | 1429.35 | 976.97 | |
125 | 1440.88 | 984.85 | 23/10 |
126 | 1452.4 | 992.73 | 37/16 |
127 | 1463.93 | 1000.61 | |
128 | 1475.46 | 1008.48 | |
129 | 1486.98 | 1016.36 | |
130 | 1498.51 | 1024.24 | 19/8 |
131 | 1510.04 | 1032.12 | 55/23 |
132 | 1521.56 | 1040 | |
133 | 1533.09 | 1047.88 | |
134 | 1544.62 | 1055.76 | |
135 | 1556.15 | 1063.64 | |
136 | 1567.67 | 1071.52 | 47/19 |
137 | 1579.2 | 1079.39 | |
138 | 1590.73 | 1087.27 | |
139 | 1602.25 | 1095.15 | 58/23 |
140 | 1613.78 | 1103.03 | 33/13 |
141 | 1625.31 | 1110.91 | 23/9 |
142 | 1636.83 | 1118.79 | |
143 | 1648.36 | 1126.67 | 57/22 |
144 | 1659.89 | 1134.55 | 60/23 |
145 | 1671.42 | 1142.42 | 21/8 |
146 | 1682.94 | 1150.3 | 37/14 |
147 | 1694.47 | 1158.18 | |
148 | 1706 | 1166.06 | |
149 | 1717.52 | 1173.94 | |
150 | 1729.05 | 1181.82 | 19/7 |
151 | 1740.58 | 1189.7 | 41/15 |
152 | 1752.1 | 1197.58 | 11/4 |
153 | 1763.63 | 1205.45 | 36/13 |
154 | 1775.16 | 1213.33 | |
155 | 1786.69 | 1221.21 | |
156 | 1798.21 | 1229.09 | |
157 | 1809.74 | 1236.97 | 37/13 |
158 | 1821.27 | 1244.85 | |
159 | 1832.79 | 1252.73 | |
160 | 1844.32 | 1260.61 | 29/10 |
161 | 1855.85 | 1268.48 | 38/13 |
162 | 1867.37 | 1276.36 | 50/17 |
163 | 1878.9 | 1284.24 | |
164 | 1890.43 | 1292.12 | |
165 | 1901.96 | 1300 | 3/1 |
Harmonics
Harmonic | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Error | Absolute (¢) | -1.19 | +0.00 | -2.38 | +3.22 | -1.19 | -2.94 | -3.58 | +0.00 | +2.03 | -1.60 | -2.38 |
Relative (%) | -10.3 | +0.0 | -20.7 | +27.9 | -10.3 | -25.5 | -31.0 | +0.0 | +17.6 | -13.9 | -20.7 | |
Steps (reduced) |
104 (104) |
165 (0) |
208 (43) |
242 (77) |
269 (104) |
292 (127) |
312 (147) |
330 (0) |
346 (16) |
360 (30) |
373 (43) |
Harmonic | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Error | Absolute (¢) | -2.63 | -4.13 | +3.22 | -4.77 | +5.55 | -1.19 | -2.58 | +0.84 | -2.94 | -2.79 | +0.94 |
Relative (%) | -22.8 | -35.9 | +27.9 | -41.4 | +48.1 | -10.3 | -22.4 | +7.3 | -25.5 | -24.2 | +8.2 | |
Steps (reduced) |
385 (55) |
396 (66) |
407 (77) |
416 (86) |
426 (96) |
434 (104) |
442 (112) |
450 (120) |
457 (127) |
464 (134) |
471 (141) |