229edt
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229 equal divisions of the tritave, perfect twelfth, or 3rd harmonic (abbreviated 229edt or 229ed3), is a nonoctave tuning system that divides the interval of 3/1 into 229 equal parts of about 8.31 ¢ each. Each step represents a frequency ratio of 31/229, or the 229th root of 3.
Intervals
| Steps | Cents | Hekts | Approximate ratios |
|---|---|---|---|
| 0 | 0 | 0 | 1/1 |
| 1 | 8.31 | 5.68 | |
| 2 | 16.61 | 11.35 | |
| 3 | 24.92 | 17.03 | |
| 4 | 33.22 | 22.71 | |
| 5 | 41.53 | 28.38 | 42/41, 43/42 |
| 6 | 49.83 | 34.06 | 35/34 |
| 7 | 58.14 | 39.74 | |
| 8 | 66.44 | 45.41 | |
| 9 | 74.75 | 51.09 | |
| 10 | 83.05 | 56.77 | 43/41 |
| 11 | 91.36 | 62.45 | 39/37, 58/55 |
| 12 | 99.67 | 68.12 | |
| 13 | 107.97 | 73.8 | 33/31 |
| 14 | 116.28 | 79.48 | 31/29, 46/43 |
| 15 | 124.58 | 85.15 | 29/27 |
| 16 | 132.89 | 90.83 | |
| 17 | 141.19 | 96.51 | 51/47 |
| 18 | 149.5 | 102.18 | |
| 19 | 157.8 | 107.86 | 23/21 |
| 20 | 166.11 | 113.54 | |
| 21 | 174.42 | 119.21 | |
| 22 | 182.72 | 124.89 | |
| 23 | 191.03 | 130.57 | |
| 24 | 199.33 | 136.24 | 46/41 |
| 25 | 207.64 | 141.92 | 62/55 |
| 26 | 215.94 | 147.6 | |
| 27 | 224.25 | 153.28 | 33/29, 74/65 |
| 28 | 232.55 | 158.95 | |
| 29 | 240.86 | 164.63 | |
| 30 | 249.16 | 170.31 | |
| 31 | 257.47 | 175.98 | |
| 32 | 265.78 | 181.66 | |
| 33 | 274.08 | 187.34 | 41/35 |
| 34 | 282.39 | 193.01 | |
| 35 | 290.69 | 198.69 | |
| 36 | 299 | 204.37 | |
| 37 | 307.3 | 210.04 | |
| 38 | 315.61 | 215.72 | 6/5 |
| 39 | 323.91 | 221.4 | 41/34, 47/39 |
| 40 | 332.22 | 227.07 | |
| 41 | 340.52 | 232.75 | |
| 42 | 348.83 | 238.43 | |
| 43 | 357.14 | 244.1 | 43/35 |
| 44 | 365.44 | 249.78 | 21/17 |
| 45 | 373.75 | 255.46 | |
| 46 | 382.05 | 261.14 | |
| 47 | 390.36 | 266.81 | |
| 48 | 398.66 | 272.49 | 34/27 |
| 49 | 406.97 | 278.17 | 43/34 |
| 50 | 415.27 | 283.84 | |
| 51 | 423.58 | 289.52 | |
| 52 | 431.88 | 295.2 | |
| 53 | 440.19 | 300.87 | 58/45 |
| 54 | 448.5 | 306.55 | 35/27 |
| 55 | 456.8 | 312.23 | |
| 56 | 465.11 | 317.9 | 17/13 |
| 57 | 473.41 | 323.58 | 46/35 |
| 58 | 481.72 | 329.26 | |
| 59 | 490.02 | 334.93 | |
| 60 | 498.33 | 340.61 | |
| 61 | 506.63 | 346.29 | 63/47, 75/56 |
| 62 | 514.94 | 351.97 | 35/26 |
| 63 | 523.25 | 357.64 | 23/17 |
| 64 | 531.55 | 363.32 | |
| 65 | 539.86 | 369 | |
| 66 | 548.16 | 374.67 | |
| 67 | 556.47 | 380.35 | 51/37 |
| 68 | 564.77 | 386.03 | |
| 69 | 573.08 | 391.7 | |
| 70 | 581.38 | 397.38 | |
| 71 | 589.69 | 403.06 | |
| 72 | 597.99 | 408.73 | 65/46 |
| 73 | 606.3 | 414.41 | |
| 74 | 614.61 | 420.09 | |
| 75 | 622.91 | 425.76 | |
| 76 | 631.22 | 431.44 | 36/25 |
| 77 | 639.52 | 437.12 | 55/38 |
| 78 | 647.83 | 442.79 | |
| 79 | 656.13 | 448.47 | 19/13 |
| 80 | 664.44 | 454.15 | 69/47 |
| 81 | 672.74 | 459.83 | |
| 82 | 681.05 | 465.5 | 43/29 |
| 83 | 689.35 | 471.18 | |
| 84 | 697.66 | 476.86 | |
| 85 | 705.97 | 482.53 | |
| 86 | 714.27 | 488.21 | 68/45 |
| 87 | 722.58 | 493.89 | 41/27 |
| 88 | 730.88 | 499.56 | |
| 89 | 739.19 | 505.24 | |
| 90 | 747.49 | 510.92 | 57/37 |
| 91 | 755.8 | 516.59 | 65/42 |
| 92 | 764.1 | 522.27 | 14/9 |
| 93 | 772.41 | 527.95 | |
| 94 | 780.72 | 533.62 | |
| 95 | 789.02 | 539.3 | 41/26 |
| 96 | 797.33 | 544.98 | 65/41 |
| 97 | 805.63 | 550.66 | 43/27 |
| 98 | 813.94 | 556.33 | |
| 99 | 822.24 | 562.01 | 37/23, 45/28 |
| 100 | 830.55 | 567.69 | 21/13 |
| 101 | 838.85 | 573.36 | |
| 102 | 847.16 | 579.04 | 31/19 |
| 103 | 855.46 | 584.72 | 77/47 |
| 104 | 863.77 | 590.39 | |
| 105 | 872.08 | 596.07 | |
| 106 | 880.38 | 601.75 | |
| 107 | 888.69 | 607.42 | |
| 108 | 896.99 | 613.1 | |
| 109 | 905.3 | 618.78 | |
| 110 | 913.6 | 624.45 | 39/23 |
| 111 | 921.91 | 630.13 | 46/27, 63/37 |
| 112 | 930.21 | 635.81 | 65/38 |
| 113 | 938.52 | 641.48 | |
| 114 | 946.82 | 647.16 | 19/11 |
| 115 | 955.13 | 652.84 | 33/19 |
| 116 | 963.44 | 658.52 | |
| 117 | 971.74 | 664.19 | |
| 118 | 980.05 | 669.87 | 37/21 |
| 119 | 988.35 | 675.55 | 23/13 |
| 120 | 996.66 | 681.22 | |
| 121 | 1004.96 | 686.9 | |
| 122 | 1013.27 | 692.58 | |
| 123 | 1021.57 | 698.25 | 74/41 |
| 124 | 1029.88 | 703.93 | |
| 125 | 1038.19 | 709.61 | |
| 126 | 1046.49 | 715.28 | |
| 127 | 1054.8 | 720.96 | 57/31 |
| 128 | 1063.1 | 726.64 | |
| 129 | 1071.41 | 732.31 | 13/7 |
| 130 | 1079.71 | 737.99 | 28/15, 69/37 |
| 131 | 1088.02 | 743.67 | |
| 132 | 1096.32 | 749.34 | |
| 133 | 1104.63 | 755.02 | |
| 134 | 1112.93 | 760.7 | |
| 135 | 1121.24 | 766.38 | 65/34 |
| 136 | 1129.55 | 772.05 | |
| 137 | 1137.85 | 777.73 | 27/14 |
| 138 | 1146.16 | 783.41 | |
| 139 | 1154.46 | 789.08 | 37/19 |
| 140 | 1162.77 | 794.76 | |
| 141 | 1171.07 | 800.44 | |
| 142 | 1179.38 | 806.11 | |
| 143 | 1187.68 | 811.79 | |
| 144 | 1195.99 | 817.47 | |
| 145 | 1204.29 | 823.14 | |
| 146 | 1212.6 | 828.82 | |
| 147 | 1220.91 | 834.5 | |
| 148 | 1229.21 | 840.17 | |
| 149 | 1237.52 | 845.85 | 47/23 |
| 150 | 1245.82 | 851.53 | 39/19 |
| 151 | 1254.13 | 857.21 | |
| 152 | 1262.43 | 862.88 | |
| 153 | 1270.74 | 868.56 | 25/12 |
| 154 | 1279.04 | 874.24 | |
| 155 | 1287.35 | 879.91 | |
| 156 | 1295.65 | 885.59 | 74/35 |
| 157 | 1303.96 | 891.27 | |
| 158 | 1312.27 | 896.94 | |
| 159 | 1320.57 | 902.62 | |
| 160 | 1328.88 | 908.3 | |
| 161 | 1337.18 | 913.97 | |
| 162 | 1345.49 | 919.65 | 37/17 |
| 163 | 1353.79 | 925.33 | |
| 164 | 1362.1 | 931 | |
| 165 | 1370.4 | 936.68 | |
| 166 | 1378.71 | 942.36 | 51/23 |
| 167 | 1387.02 | 948.03 | |
| 168 | 1395.32 | 953.71 | 47/21, 56/25 |
| 169 | 1403.63 | 959.39 | |
| 170 | 1411.93 | 965.07 | |
| 171 | 1420.24 | 970.74 | |
| 172 | 1428.54 | 976.42 | |
| 173 | 1436.85 | 982.1 | 39/17 |
| 174 | 1445.15 | 987.77 | |
| 175 | 1453.46 | 993.45 | |
| 176 | 1461.76 | 999.13 | |
| 177 | 1470.07 | 1004.8 | |
| 178 | 1478.38 | 1010.48 | |
| 179 | 1486.68 | 1016.16 | |
| 180 | 1494.99 | 1021.83 | |
| 181 | 1503.29 | 1027.51 | |
| 182 | 1511.6 | 1033.19 | |
| 183 | 1519.9 | 1038.86 | |
| 184 | 1528.21 | 1044.54 | |
| 185 | 1536.51 | 1050.22 | 17/7 |
| 186 | 1544.82 | 1055.9 | |
| 187 | 1553.12 | 1061.57 | |
| 188 | 1561.43 | 1067.25 | |
| 189 | 1569.74 | 1072.93 | |
| 190 | 1578.04 | 1078.6 | |
| 191 | 1586.35 | 1084.28 | 5/2 |
| 192 | 1594.65 | 1089.96 | |
| 193 | 1602.96 | 1095.63 | |
| 194 | 1611.26 | 1101.31 | |
| 195 | 1619.57 | 1106.99 | |
| 196 | 1627.87 | 1112.66 | |
| 197 | 1636.18 | 1118.34 | |
| 198 | 1644.49 | 1124.02 | |
| 199 | 1652.79 | 1129.69 | |
| 200 | 1661.1 | 1135.37 | |
| 201 | 1669.4 | 1141.05 | |
| 202 | 1677.71 | 1146.72 | 29/11 |
| 203 | 1686.01 | 1152.4 | |
| 204 | 1694.32 | 1158.08 | |
| 205 | 1702.62 | 1163.76 | |
| 206 | 1710.93 | 1169.43 | |
| 207 | 1719.23 | 1175.11 | |
| 208 | 1727.54 | 1180.79 | |
| 209 | 1735.85 | 1186.46 | |
| 210 | 1744.15 | 1192.14 | 63/23 |
| 211 | 1752.46 | 1197.82 | |
| 212 | 1760.76 | 1203.49 | 47/17 |
| 213 | 1769.07 | 1209.17 | |
| 214 | 1777.37 | 1214.85 | |
| 215 | 1785.68 | 1220.52 | |
| 216 | 1793.98 | 1226.2 | 31/11 |
| 217 | 1802.29 | 1231.88 | |
| 218 | 1810.59 | 1237.55 | 37/13 |
| 219 | 1818.9 | 1243.23 | |
| 220 | 1827.21 | 1248.91 | |
| 221 | 1835.51 | 1254.59 | |
| 222 | 1843.82 | 1260.26 | |
| 223 | 1852.12 | 1265.94 | |
| 224 | 1860.43 | 1271.62 | 41/14 |
| 225 | 1868.73 | 1277.29 | |
| 226 | 1877.04 | 1282.97 | |
| 227 | 1885.34 | 1288.65 | |
| 228 | 1893.65 | 1294.32 | |
| 229 | 1901.96 | 1300 | 3/1 |
Harmonics
| Harmonic | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | -4.01 | +0.00 | +0.28 | -3.98 | -4.01 | +3.20 | -3.73 | +0.00 | +0.32 | +1.42 | +0.28 |
| Relative (%) | -48.3 | +0.0 | +3.4 | -47.9 | -48.3 | +38.5 | -44.9 | +0.0 | +3.8 | +17.1 | +3.4 | |
| Steps (reduced) |
144 (144) |
229 (0) |
289 (60) |
335 (106) |
373 (144) |
406 (177) |
433 (204) |
458 (0) |
480 (22) |
500 (42) |
518 (60) | |
| Harmonic | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | +2.90 | -0.81 | -3.98 | +0.57 | +3.58 | -4.01 | +2.05 | -3.69 | +3.20 | -2.59 | +3.51 |
| Relative (%) | +35.0 | -9.8 | -47.9 | +6.8 | +43.1 | -48.3 | +24.7 | -44.5 | +38.5 | -31.2 | +42.3 | |
| Steps (reduced) |
535 (77) |
550 (92) |
564 (106) |
578 (120) |
591 (133) |
602 (144) |
614 (156) |
624 (166) |
635 (177) |
644 (186) |
654 (196) | |