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Twelfth root of two

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in the sixteenth and seventeenth centuries. It allows measurement and comparison of different intervals (frequency ratios) as consisting of different numbers of a single interval, the equal tempered semitone (for example, a minor third is 3 semitones, a major third is 4 semitones, and perfect fifth
1195:
typically have pitch adjustments of up to ±6%, generally used to match the playback or recording pitch to other music sources having slightly different tunings (or possibly recorded on equipment that was not running at quite the right speed). Modern recording studios utilize digital
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may be the first European to suggest twelve-tone equal temperament. The twelfth root of two was first calculated in 1584 by the Chinese mathematician and musician
1865: 1649: 1438: 1191:), increasing or decreasing the playback speed of a recording by 6% will shift the pitch up or down by about one semitone, or "half-step". Upscale 1134: 1492: 1618: 1594: 1517: 1415: 1192: 2086: 1204:
up to several half-steps. Reel-to-reel adjustments also affect the tempo of the recorded sound, while digital shifting does not.
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Historically this number was proposed for the first time in relationship to musical tuning in 1580 (drafted, rewritten 1610) by
2129: 1858: 1642: 1508: 1992: 1547: 172: 369:(which has a ratio of 2:1) into twelve equal parts. Each note has a frequency that is 2 times that of the one below it. 2139: 1737: 2134: 1851: 1635: 2061: 1585: 1276: 1265: 1405: 1224:
using an abacus to reach twenty four decimal places accurately, calculated circa 1605 by Flemish mathematician
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perfect fifth is 3/2, and the difference between the equal tempered perfect fifth and the just is a
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Octaves (12 semitones) increase exponentially when measured on a linear frequency scale (Hz).
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Applying this value successively to the tones of a chromatic scale, starting from
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Octaves are equally spaced when measured on a logarithmic scale (cents).
1568: 701: 390:) with a frequency of 440 Hz, produces the following sequence of 1843: 959: 441: 366: 1627: 1560: 140:, approximately equal to 1.0594631. It is most important in Western 1433:"Sequence A010774 (Decimal expansion of 12th root of 2)" 1146: 1138: 269:. Fraction approximations in increasing order of accuracy include 148: 175:. This number was proposed for the first time in relationship to 1245: 1847: 1631: 1296:"The smallest interval in an equal-tempered scale is the ratio 247: 1011:
Other tuning scales use slightly different interval ratios:
2071: 1432: 995:: 880 Hz) is exactly twice the frequency of the lower 1159:
Since the frequency ratio of a semitone is close to 106% (
1454:"Equal temperament | Definition & Facts | Britannica" 1541:(1933). "A Sixteenth Century Chinese Approximation for 180:
is 7 semitones). A semitone itself is divided into 100
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depicts equal distances between notes (logarithmic)
1061:(1954) makes use of the twenty-fifth root of five ( 1045:
uses the interval of the thirteenth root of three (
1356: 1321: 1183: 226: 125: 87: 1068:), a compound major third divided into 5×5 parts. 1859: 1643: 1480:The Cambridge History of Western Music Theory 8: 1143:One octave of 12-tet on a monochord (linear) 1003:: 440 Hz), that is, one octave higher. 1866: 1852: 1844: 1650: 1636: 1628: 1522:New Remarks on the Study of Resonant Tubes 1439:On-Line Encyclopedia of Integer Sequences 1347: 1342: 1334: 1307: 1301: 1200:to achieve similar results, ranging from 1184:{\displaystyle 1.05946\times 100=105.946} 1164: 702:Augmented fourth/Diminished fifth/Tritone 214: 210: 196: 191: 189: 113: 109: 103: 78: 73: 71: 1251:Just intonation § Practical difficulties 396: 1399: 1397: 1395: 1393: 1389: 1289: 1135:Audio time stretching and pitch scaling 1228:, in 1636 by the French mathematician 1509:A Short History of the Chinese People 1410:, p.294-5. Third edition. Princeton. 227:{\displaystyle {\sqrt{2}}=2^{1/1200}} 7: 1193:reel-to-reel magnetic tape recorders 1408:: Non-European Roots of Mathematics 1403:Joseph, George Gheverghese (2010). 361:is a ratio of frequencies and the 353:The equal-tempered chromatic scale 25: 522:Major second/Full step/Whole tone 2085: 1827: 1506:Goodrich, L. Carrington (2013). 48: 34: 1232:and in 1691 by German musician 483:Minor second/Half step/Semitone 1: 1548:American Mathematical Monthly 1520:. Cites: Chu Tsai-yĂŒ (1584). 250:to 20 significant figures is 173:twelve-tone equal temperament 1477:Christensen, Thomas (2002), 1357:{\displaystyle r={\sqrt{p}}} 365:chromatic scale divides the 1738:Quadratic irrational number 1724:Pisot–Vijayaraghavan number 1216:. In 1581 Italian musician 27:Algebraic irrational number 2161: 1429:Sloane, N. J. A. 1372:(= 2/1 in an octave) into 1132: 1027:, the twelfth root of the 144:, where it represents the 88:{\displaystyle {\sqrt{2}}} 2094: 2083: 1881: 1823: 1665: 1586:On the Sensations of Tone 1277:The Well-Tempered Clavier 1266:Scientific pitch notation 403:Standard interval name(s) 1406:The Crest of the Peacock 418:(to six decimal places) 126:{\displaystyle 2^{1/12}} 1322:{\displaystyle r^{n}=p} 2130:Mathematical constants 1834:Mathematics portal 1589:. Dover Publications. 1358: 1323: 1185: 1156: 1144: 228: 127: 89: 1359: 1324: 1271:Twelve-tone technique 1261:Piano key frequencies 1256:Music and mathematics 1186: 1150: 1142: 229: 128: 90: 1680:Constructible number 1333: 1300: 1234:Andreas Werckmeister 1163: 188: 102: 70: 1806:Supersilver ratio ( 1797:Supergolden ratio ( 1043:Bohlen–Pierce scale 1041:The equal tempered 1007:Other tuning scales 64:twelfth root of two 2140:Irrational numbers 1875:Irrational numbers 1700:Eisenstein integer 1610:Genesis of a Music 1581:Helmholtz, Hermann 1458:www.britannica.com 1442:. OEIS Foundation. 1368:divides the ratio 1364:, where the ratio 1354: 1319: 1181: 1157: 1145: 405:relating to A 440 224: 123: 85: 2135:Algebraic numbers 2117: 2116: 2018:Supersilver ratio 1983:Supergolden ratio 1943:Twelfth root of 2 1841: 1840: 1815:Twelfth root of 2 1695:Doubling the cube 1685:Conway's constant 1670:Algebraic integer 1659:Algebraic numbers 1613:. Da Capo Press. 1352: 1029:Pythagorean comma 985: 984: 201: 138:irrational number 83: 18:Twelfth root of 2 16:(Redirected from 2152: 2089: 2077: 2067: 2055:Square root of 7 2050:Square root of 6 2045: 2028:Square root of 5 2023: 2013:Square root of 3 2008: 1998: 1988: 1978:Square root of 2 1971: 1956: 1938: 1906: 1891: 1868: 1861: 1854: 1845: 1832: 1831: 1809: 1800: 1792:Square root of 7 1787:Square root of 6 1782:Square root of 5 1777:Square root of 3 1772:Square root of 2 1765: 1761: 1732: 1713: 1705:Gaussian integer 1690:Cyclotomic field 1652: 1645: 1638: 1629: 1624: 1600: 1577:Ellis, Alexander 1572: 1544: 1525: 1504: 1498: 1497: 1474: 1468: 1467: 1465: 1464: 1450: 1444: 1443: 1425: 1419: 1401: 1377: 1363: 1361: 1360: 1355: 1353: 1351: 1343: 1328: 1326: 1325: 1320: 1312: 1311: 1294: 1218:Vincenzo Galilei 1190: 1188: 1187: 1182: 1153:chromatic circle 1129:Pitch adjustment 1123: 1122: 1109: 1108: 1095: 1094: 1081: 1080: 1067: 1066: 1051: 1050: 1037: 1036: 975: 974: 948: 947: 943: 936: 935: 917: 916: 911: 910: 898: 897: 893: 886: 885: 859: 858: 854: 847: 846: 828: 827: 822: 821: 809: 808: 804: 797: 796: 770: 769: 765: 758: 757: 731: 730: 726: 718: 717: 698: 697: 692: 691: 679: 678: 674: 667: 666: 640: 639: 635: 627: 626: 607: 606: 601: 600: 588: 587: 583: 576: 575: 549: 548: 544: 537: 536: 510: 509: 505: 498: 497: 479: 478: 473: 472: 457: 456: 397: 359:musical interval 348: 346: 345: 342: 339: 332: 330: 329: 326: 323: 316: 314: 313: 310: 307: 300: 298: 297: 294: 291: 284: 282: 281: 278: 275: 268: 267: 264: 261: 258: 255: 233: 231: 230: 225: 223: 222: 218: 202: 200: 192: 170: 169: 168: 166: 153:musical interval 132: 130: 129: 124: 122: 121: 117: 94: 92: 91: 86: 84: 82: 74: 52: 38: 21: 2160: 2159: 2155: 2154: 2153: 2151: 2150: 2149: 2120: 2119: 2118: 2113: 2090: 2081: 2075: 2065: 2044: 2036: 2021: 2006: 1996: 1986: 1969: 1951: 1936: 1904: 1889: 1877: 1872: 1842: 1837: 1826: 1819: 1807: 1798: 1766: 1763: 1759: 1743:Rational number 1730: 1729:Plastic ratio ( 1711: 1675:Chebyshev nodes 1661: 1656: 1621: 1603: 1597: 1575: 1561:10.2307/2300937 1542: 1537: 1534: 1532:Further reading 1529: 1528: 1505: 1501: 1495: 1476: 1475: 1471: 1462: 1460: 1452: 1451: 1447: 1427: 1426: 1422: 1402: 1391: 1386: 1381: 1380: 1331: 1330: 1303: 1298: 1297: 1295: 1291: 1286: 1242: 1210: 1161: 1160: 1137: 1131: 1120: 1118: 1106: 1104: 1092: 1090: 1078: 1076: 1064: 1062: 1048: 1046: 1034: 1032: 1009: 1002: 994: 972: 970: 945: 941: 940: 933: 931: 914: 913: 908: 907: 895: 891: 890: 883: 881: 856: 852: 851: 844: 842: 825: 824: 819: 818: 806: 802: 801: 794: 792: 767: 763: 762: 755: 753: 728: 724: 723: 715: 713: 695: 694: 689: 688: 676: 672: 671: 664: 662: 637: 633: 632: 624: 622: 604: 603: 598: 597: 585: 581: 580: 573: 571: 546: 542: 541: 534: 532: 507: 503: 502: 495: 493: 476: 475: 470: 469: 454: 452: 429: 428:Just intonation 424: 422:Just intonation 417: 409: 404: 388: 355: 343: 340: 337: 336: 334: 327: 324: 321: 320: 318: 311: 308: 305: 304: 302: 295: 292: 289: 288: 286: 279: 276: 273: 272: 270: 265: 262: 259: 256: 253: 251: 240: 238:Numerical value 206: 186: 185: 164: 162: 161: 160: 105: 100: 99: 68: 67: 60: 59: 58: 57: 56: 53: 44: 43: 42: 39: 28: 23: 22: 15: 12: 11: 5: 2158: 2156: 2148: 2147: 2145:Musical tuning 2142: 2137: 2132: 2122: 2121: 2115: 2114: 2112: 2111: 2106: 2104:Transcendental 2101: 2095: 2092: 2091: 2084: 2082: 2080: 2079: 2069: 2058: 2057: 2052: 2047: 2040: 2030: 2025: 2015: 2010: 2000: 1990: 1980: 1974: 1973: 1963: 1961:Cube root of 2 1958: 1945: 1940: 1930: 1925: 1923:Logarithm of 2 1919: 1918: 1913: 1908: 1898: 1893: 1882: 1879: 1878: 1873: 1871: 1870: 1863: 1856: 1848: 1839: 1838: 1824: 1821: 1820: 1818: 1817: 1812: 1803: 1794: 1789: 1784: 1779: 1774: 1769: 1762: 1758:Silver ratio ( 1755: 1750: 1745: 1740: 1735: 1726: 1721: 1716: 1710:Golden ratio ( 1707: 1702: 1697: 1692: 1687: 1682: 1677: 1672: 1666: 1663: 1662: 1657: 1655: 1654: 1647: 1640: 1632: 1626: 1625: 1619: 1601: 1595: 1573: 1539:Barbour, J. M. 1533: 1530: 1527: 1526: 1499: 1494:978-0521686983 1493: 1469: 1445: 1420: 1388: 1387: 1385: 1382: 1379: 1378: 1350: 1346: 1341: 1338: 1318: 1315: 1310: 1306: 1288: 1287: 1285: 1282: 1281: 1280: 1273: 1268: 1263: 1258: 1253: 1248: 1241: 1238: 1230:Marin Mersenne 1209: 1206: 1198:pitch shifting 1180: 1177: 1174: 1171: 1168: 1130: 1127: 1126: 1125: 1111: 1097: 1083: 1069: 1055:Stockhausen's 1053: 1039: 1008: 1005: 1000: 992: 983: 982: 979: 976: 968: 965: 962: 957: 953: 952: 949: 937: 929: 926: 923: 918: 903: 902: 899: 887: 879: 876: 873: 868: 864: 863: 860: 848: 840: 837: 834: 829: 814: 813: 810: 798: 790: 787: 784: 779: 775: 774: 771: 759: 751: 748: 745: 740: 736: 735: 732: 720: 710: 707: 704: 699: 684: 683: 680: 668: 660: 657: 654: 652:Perfect fourth 649: 645: 644: 641: 629: 619: 616: 613: 608: 593: 592: 589: 577: 569: 566: 563: 558: 554: 553: 550: 538: 530: 527: 524: 519: 515: 514: 511: 499: 491: 488: 485: 480: 465: 464: 461: 458: 450: 447: 444: 439: 435: 434: 426: 419: 414: 411: 406: 401: 386: 363:equal-tempered 354: 351: 239: 236: 221: 217: 213: 209: 205: 199: 195: 177:musical tuning 120: 116: 112: 108: 81: 77: 54: 47: 46: 45: 40: 33: 32: 31: 30: 29: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 2157: 2146: 2143: 2141: 2138: 2136: 2133: 2131: 2128: 2127: 2125: 2110: 2109:Trigonometric 2107: 2105: 2102: 2100: 2099:Schizophrenic 2097: 2096: 2093: 2088: 2073: 2070: 2063: 2060: 2059: 2056: 2053: 2051: 2048: 2043: 2039: 2034: 2031: 2029: 2026: 2019: 2016: 2014: 2011: 2004: 2001: 1994: 1993:ErdƑs–Borwein 1991: 1984: 1981: 1979: 1976: 1975: 1967: 1966:Plastic ratio 1964: 1962: 1959: 1954: 1949: 1946: 1944: 1941: 1934: 1931: 1929: 1926: 1924: 1921: 1920: 1917: 1914: 1912: 1909: 1902: 1899: 1897: 1894: 1887: 1884: 1883: 1880: 1876: 1869: 1864: 1862: 1857: 1855: 1850: 1849: 1846: 1836: 1835: 1830: 1822: 1816: 1813: 1811: 1804: 1802: 1795: 1793: 1790: 1788: 1785: 1783: 1780: 1778: 1775: 1773: 1770: 1768: 1756: 1754: 1751: 1749: 1748:Root of unity 1746: 1744: 1741: 1739: 1736: 1734: 1727: 1725: 1722: 1720: 1719:Perron number 1717: 1715: 1708: 1706: 1703: 1701: 1698: 1696: 1693: 1691: 1688: 1686: 1683: 1681: 1678: 1676: 1673: 1671: 1668: 1667: 1664: 1660: 1653: 1648: 1646: 1641: 1639: 1634: 1633: 1630: 1622: 1620:0-306-80106-X 1616: 1612: 1611: 1606: 1605:Partch, Harry 1602: 1598: 1596:0-486-60753-4 1592: 1588: 1587: 1582: 1578: 1574: 1570: 1566: 1562: 1558: 1554: 1550: 1549: 1540: 1536: 1535: 1531: 1523: 1519: 1518:9780486169231 1515: 1512:, . Courier. 1511: 1510: 1503: 1500: 1496: 1490: 1486: 1482: 1481: 1473: 1470: 1459: 1455: 1449: 1446: 1441: 1440: 1434: 1430: 1424: 1421: 1417: 1416:9781400836369 1413: 1409: 1407: 1400: 1398: 1396: 1394: 1390: 1383: 1376:equal parts." 1375: 1371: 1367: 1348: 1344: 1339: 1336: 1316: 1313: 1308: 1304: 1293: 1290: 1283: 1279: 1278: 1274: 1272: 1269: 1267: 1264: 1262: 1259: 1257: 1254: 1252: 1249: 1247: 1244: 1243: 1239: 1237: 1235: 1231: 1227: 1223: 1219: 1215: 1207: 1205: 1203: 1199: 1194: 1178: 1175: 1172: 1169: 1166: 1154: 1149: 1141: 1136: 1128: 1117:is based on ≈ 1116: 1112: 1103:is based on ≈ 1102: 1098: 1089:is based on ≈ 1088: 1084: 1075:is based on ≈ 1074: 1070: 1060: 1059: 1054: 1044: 1040: 1035:531441/524288 1030: 1026: 1022: 1018: 1014: 1013: 1012: 1006: 1004: 998: 990: 980: 977: 969: 966: 963: 961: 958: 955: 954: 950: 938: 930: 927: 924: 922: 921:Major seventh 919: 905: 904: 900: 888: 880: 877: 874: 872: 871:Minor seventh 869: 866: 865: 861: 849: 841: 838: 835: 833: 830: 816: 815: 811: 799: 791: 788: 785: 783: 780: 777: 776: 772: 760: 752: 749: 746: 744: 743:Perfect fifth 741: 738: 737: 733: 721: 719: 711: 708: 705: 703: 700: 686: 685: 681: 669: 661: 658: 655: 653: 650: 647: 646: 642: 630: 628: 620: 617: 614: 612: 609: 595: 594: 590: 578: 570: 567: 564: 562: 559: 556: 555: 551: 539: 531: 528: 525: 523: 520: 517: 516: 512: 500: 492: 489: 486: 484: 481: 467: 466: 462: 459: 451: 448: 445: 443: 440: 437: 436: 433: 427: 423: 420: 415: 412: 407: 402: 399: 398: 395: 393: 389: 382: 381: 375: 370: 368: 364: 360: 352: 350: 249: 245: 237: 235: 219: 215: 211: 207: 203: 197: 193: 183: 178: 174: 167: 158: 154: 150: 147: 143: 139: 136: 118: 114: 110: 106: 98: 79: 75: 65: 51: 37: 19: 2041: 2037: 2033:Silver ratio 2003:Golden ratio 1952: 1942: 1825: 1753:Salem number 1608: 1584: 1555:(2): 69–73. 1552: 1546: 1521: 1507: 1502: 1479: 1472: 1461:. Retrieved 1457: 1448: 1436: 1423: 1404: 1373: 1369: 1365: 1292: 1275: 1226:Simon Stevin 1214:Simon Stevin 1211: 1158: 1056: 1010: 996: 988: 986: 379: 373: 371: 356: 244:twelfth root 241: 142:music theory 97:equivalently 63: 61: 1115:alpha scale 1087:gamma scale 1073:delta scale 1021:Pythagorean 832:Major sixth 782:Minor sixth 611:Major third 561:Minor third 416:Coefficient 413:Multiplier 2124:Categories 1933:Lemniscate 1483:, p.  1463:2024-06-03 1384:References 1133:See also: 1101:beta scale 987:The final 383:(known as 184:(1 cent = 1896:Liouville 1886:Chaitin's 1222:Zhu Zaiyu 1170:× 1058:Studie II 408:Frequency 146:frequency 135:algebraic 1607:(1974). 1583:(1954). 1240:See also 915:♭ 909:♯ 826:♭ 820:♯ 696:♭ 690:♯ 605:♭ 599:♯ 477:♭ 471:♯ 157:semitone 133:) is an 2062:Euler's 1948:ApĂ©ry's 1569:2300937 1431:(ed.). 1208:History 1179:105.946 1167:1.05946 1119:√ 1105:√ 1091:√ 1077:√ 1063:√ 1047:√ 1033:√ 951:-11.73 944:⁄ 894:⁄ 862:-15.64 855:⁄ 812:+13.69 805:⁄ 766:⁄ 734:+17.49 727:⁄ 675:⁄ 643:-13.69 636:⁄ 591:+15.64 584:⁄ 545:⁄ 513:+11.73 506:⁄ 392:pitches 378:middle 347:⁠ 335:⁠ 331:⁠ 319:⁠ 315:⁠ 303:⁠ 299:⁠ 287:⁠ 283:⁠ 271:⁠ 155:) of a 1928:Dottie 1617:  1593:  1567:  1516:  1491:  1414:  964:880.00 960:Octave 925:830.61 901:+3.91 875:783.99 836:739.99 786:698.46 773:+1.96 747:659.26 706:622.25 682:-1.96 656:587.33 615:554.37 565:523.25 552:-3.91 526:493.88 487:466.16 446:440.00 442:Unison 425:ratio 376:above 367:octave 333:, and 1916:Cahen 1911:Omega 1901:Prime 1565:JSTOR 1329:, so 1284:Notes 1202:cents 971:2.000 932:1.887 882:1.781 843:1.681 793:1.587 754:1.498 714:1.414 663:1.334 623:1.259 572:1.189 533:1.122 494:1.059 453:1.000 432:cents 410:(Hz) 400:Note 344:17843 338:18904 252:1.059 182:cents 171:) in 149:ratio 1615:ISBN 1591:ISBN 1514:ISBN 1489:ISBN 1437:The 1412:ISBN 1246:Fret 1151:The 1113:The 1099:The 1085:The 1071:The 1025:grad 1017:just 1015:The 328:1564 322:1657 266:2646 242:The 220:1200 198:1200 165:Play 95:(or 62:The 1955:(3) 1557:doi 1545:". 1485:205 1173:100 1121:3/2 1107:3/2 1093:3/2 1079:3/2 1019:or 973:000 934:748 884:797 845:792 795:401 756:307 716:213 665:839 625:921 574:207 535:462 496:463 455:000 312:185 306:196 263:295 260:359 257:094 254:463 248:two 246:of 234:). 66:or 2126:: 2072:Pi 1579:; 1563:. 1553:40 1551:. 1487:, 1456:. 1435:. 1392:^ 1236:. 1052:). 1038:). 999:(A 991:(A 981:0 978:2 942:15 939:≈ 912:/A 892:16 889:≈ 850:≈ 823:/G 800:≈ 761:≈ 722:≈ 693:/E 670:≈ 631:≈ 602:/D 579:≈ 540:≈ 508:15 504:16 501:≈ 474:/B 463:0 460:1 430:± 394:: 357:A 349:. 317:, 301:, 296:84 290:89 285:, 280:17 274:18 119:12 80:12 2078:) 2076:π 2074:( 2068:) 2066:e 2064:( 2046:) 2042:S 2038:ÎŽ 2035:( 2024:) 2022:ς 2020:( 2009:) 2007:φ 2005:( 1999:) 1997:E 1995:( 1989:) 1987:ψ 1985:( 1972:) 1970:ρ 1968:( 1957:) 1953:ζ 1950:( 1939:) 1937:ϖ 1935:( 1907:) 1905:ρ 1903:( 1892:) 1890:Ω 1888:( 1867:e 1860:t 1853:v 1810:) 1808:ς 1801:) 1799:ψ 1767:) 1764:S 1760:ÎŽ 1733:) 1731:ρ 1714:) 1712:φ 1651:e 1644:t 1637:v 1623:. 1599:. 1571:. 1559:: 1543:π 1524:. 1466:. 1418:. 1374:n 1370:p 1366:r 1349:n 1345:p 1340:= 1337:r 1317:p 1314:= 1309:n 1305:r 1176:= 1124:. 1110:. 1096:. 1082:. 1065:5 1049:3 1031:( 1001:4 997:A 993:5 989:A 967:2 956:A 946:8 928:2 906:G 896:9 878:2 867:G 857:3 853:5 839:2 817:F 807:5 803:8 789:2 778:F 768:2 764:3 750:2 739:E 729:5 725:7 709:2 687:D 677:3 673:4 659:2 648:D 638:4 634:5 618:2 596:C 586:5 582:6 568:2 557:C 547:8 543:9 529:2 518:B 490:2 468:A 449:2 438:A 387:4 385:A 380:C 374:A 341:/ 325:/ 309:/ 293:/ 277:/ 216:/ 212:1 208:2 204:= 194:2 159:( 151:( 115:/ 111:1 107:2 76:2 20:)

Index

Twelfth root of 2


equivalently
algebraic
irrational number
music theory
frequency
ratio
musical interval
semitone
Play
twelve-tone equal temperament
musical tuning
cents
twelfth root
two
musical interval
equal-tempered
octave
middle C
A4
pitches
Just intonation
cents
Unison
Minor second/Half step/Semitone
Major second/Full step/Whole tone
Minor third
Major third

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