126edt
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126 equal divisions of the tritave, perfect twelfth, or 3rd harmonic (abbreviated 126edt or 126ed3), is a nonoctave tuning system that divides the interval of 3/1 into 126 equal parts of about 15.1 ¢ each. Each step represents a frequency ratio of 31/126, or the 126th root of 3.
Intervals
| Steps | Cents | Hekts | Approximate ratios |
|---|---|---|---|
| 0 | 0 | 0 | 1/1 |
| 1 | 15.1 | 10.3 | |
| 2 | 30.2 | 20.6 | |
| 3 | 45.3 | 31 | 38/37, 39/38 |
| 4 | 60.4 | 41.3 | 30/29 |
| 5 | 75.5 | 51.6 | 47/45 |
| 6 | 90.6 | 61.9 | 39/37 |
| 7 | 105.7 | 72.2 | 50/47 |
| 8 | 120.8 | 82.5 | |
| 9 | 135.9 | 92.9 | |
| 10 | 150.9 | 103.2 | |
| 11 | 166 | 113.5 | 11/10 |
| 12 | 181.1 | 123.8 | 10/9 |
| 13 | 196.2 | 134.1 | 37/33 |
| 14 | 211.3 | 144.4 | 35/31 |
| 15 | 226.4 | 154.8 | 49/43 |
| 16 | 241.5 | 165.1 | |
| 17 | 256.6 | 175.4 | |
| 18 | 271.7 | 185.7 | |
| 19 | 286.8 | 196 | 46/39 |
| 20 | 301.9 | 206.3 | |
| 21 | 317 | 216.7 | |
| 22 | 332.1 | 227 | 23/19 |
| 23 | 347.2 | 237.3 | 11/9 |
| 24 | 362.3 | 247.6 | 37/30 |
| 25 | 377.4 | 257.9 | 41/33, 46/37, 51/41 |
| 26 | 392.5 | 268.3 | |
| 27 | 407.6 | 278.6 | 19/15, 43/34 |
| 28 | 422.7 | 288.9 | 37/29 |
| 29 | 437.8 | 299.2 | |
| 30 | 452.8 | 309.5 | 13/10 |
| 31 | 467.9 | 319.8 | 38/29 |
| 32 | 483 | 330.2 | 41/31 |
| 33 | 498.1 | 340.5 | |
| 34 | 513.2 | 350.8 | 39/29 |
| 35 | 528.3 | 361.1 | |
| 36 | 543.4 | 371.4 | |
| 37 | 558.5 | 381.7 | 29/21 |
| 38 | 573.6 | 392.1 | 46/33 |
| 39 | 588.7 | 402.4 | |
| 40 | 603.8 | 412.7 | |
| 41 | 618.9 | 423 | 10/7 |
| 42 | 634 | 433.3 | 49/34 |
| 43 | 649.1 | 443.7 | |
| 44 | 664.2 | 454 | |
| 45 | 679.3 | 464.3 | |
| 46 | 694.4 | 474.6 | |
| 47 | 709.5 | 484.9 | |
| 48 | 724.6 | 495.2 | 41/27 |
| 49 | 739.6 | 505.6 | 23/15 |
| 50 | 754.7 | 515.9 | 17/11 |
| 51 | 769.8 | 526.2 | |
| 52 | 784.9 | 536.5 | |
| 53 | 800 | 546.8 | 27/17, 46/29 |
| 54 | 815.1 | 557.1 | |
| 55 | 830.2 | 567.5 | 21/13 |
| 56 | 845.3 | 577.8 | |
| 57 | 860.4 | 588.1 | 51/31 |
| 58 | 875.5 | 598.4 | |
| 59 | 890.6 | 608.7 | |
| 60 | 905.7 | 619 | |
| 61 | 920.8 | 629.4 | 46/27 |
| 62 | 935.9 | 639.7 | |
| 63 | 951 | 650 | |
| 64 | 966.1 | 660.3 | |
| 65 | 981.2 | 670.6 | 37/21 |
| 66 | 996.3 | 681 | |
| 67 | 1011.4 | 691.3 | |
| 68 | 1026.5 | 701.6 | 38/21 |
| 69 | 1041.5 | 711.9 | 31/17 |
| 70 | 1056.6 | 722.2 | 35/19 |
| 71 | 1071.7 | 732.5 | 13/7 |
| 72 | 1086.8 | 742.9 | |
| 73 | 1101.9 | 753.2 | 17/9 |
| 74 | 1117 | 763.5 | |
| 75 | 1132.1 | 773.8 | |
| 76 | 1147.2 | 784.1 | 33/17 |
| 77 | 1162.3 | 794.4 | 45/23 |
| 78 | 1177.4 | 804.8 | |
| 79 | 1192.5 | 815.1 | |
| 80 | 1207.6 | 825.4 | |
| 81 | 1222.7 | 835.7 | |
| 82 | 1237.8 | 846 | 47/23 |
| 83 | 1252.9 | 856.3 | |
| 84 | 1268 | 866.7 | |
| 85 | 1283.1 | 877 | 21/10 |
| 86 | 1298.2 | 887.3 | |
| 87 | 1313.3 | 897.6 | |
| 88 | 1328.3 | 907.9 | |
| 89 | 1343.4 | 918.3 | 50/23 |
| 90 | 1358.5 | 928.6 | 46/21 |
| 91 | 1373.6 | 938.9 | |
| 92 | 1388.7 | 949.2 | 29/13 |
| 93 | 1403.8 | 959.5 | |
| 94 | 1418.9 | 969.8 | |
| 95 | 1434 | 980.2 | |
| 96 | 1449.1 | 990.5 | 30/13 |
| 97 | 1464.2 | 1000.8 | |
| 98 | 1479.3 | 1011.1 | |
| 99 | 1494.4 | 1021.4 | 45/19 |
| 100 | 1509.5 | 1031.7 | 43/18 |
| 101 | 1524.6 | 1042.1 | 41/17 |
| 102 | 1539.7 | 1052.4 | |
| 103 | 1554.8 | 1062.7 | 27/11 |
| 104 | 1569.9 | 1073 | 47/19 |
| 105 | 1585 | 1083.3 | |
| 106 | 1600.1 | 1093.7 | |
| 107 | 1615.2 | 1104 | |
| 108 | 1630.2 | 1114.3 | |
| 109 | 1645.3 | 1124.6 | |
| 110 | 1660.4 | 1134.9 | |
| 111 | 1675.5 | 1145.2 | 50/19 |
| 112 | 1690.6 | 1155.6 | |
| 113 | 1705.7 | 1165.9 | |
| 114 | 1720.8 | 1176.2 | 27/10 |
| 115 | 1735.9 | 1186.5 | 30/11 |
| 116 | 1751 | 1196.8 | |
| 117 | 1766.1 | 1207.1 | |
| 118 | 1781.2 | 1217.5 | |
| 119 | 1796.3 | 1227.8 | |
| 120 | 1811.4 | 1238.1 | 37/13 |
| 121 | 1826.5 | 1248.4 | |
| 122 | 1841.6 | 1258.7 | 29/10 |
| 123 | 1856.7 | 1269 | 38/13 |
| 124 | 1871.8 | 1279.4 | |
| 125 | 1886.9 | 1289.7 | |
| 126 | 1902 | 1300 | 3/1 |
Harmonics
| Harmonic | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | -7.50 | +0.00 | +0.09 | +6.24 | -7.50 | -2.67 | -7.42 | +0.00 | -1.27 | -0.23 | +0.09 |
| Relative (%) | -49.7 | +0.0 | +0.6 | +41.3 | -49.7 | -17.7 | -49.1 | +0.0 | -8.4 | -1.5 | +0.6 | |
| Steps (reduced) |
79 (79) |
126 (0) |
159 (33) |
185 (59) |
205 (79) |
223 (97) |
238 (112) |
252 (0) |
264 (12) |
275 (23) |
285 (33) | |
| Harmonic | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | -2.63 | +4.92 | +6.24 | +0.17 | +0.88 | -7.50 | +4.56 | +6.33 | -2.67 | +7.36 | +5.88 |
| Relative (%) | -17.4 | +32.6 | +41.3 | +1.1 | +5.8 | -49.7 | +30.2 | +41.9 | -17.7 | +48.8 | +39.0 | |
| Steps (reduced) |
294 (42) |
303 (51) |
311 (59) |
318 (66) |
325 (73) |
331 (79) |
338 (86) |
344 (92) |
349 (97) |
355 (103) |
360 (108) | |