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Fundamental frequency

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form the harmonic series. Overtones which are perfect integer multiples of the fundamental are called harmonics. When an overtone is near to being harmonic, but not exact, it is sometimes called a harmonic partial, although they are often referred to simply as harmonics. Sometimes overtones are created that are not anywhere near a harmonic, and are just called partials or inharmonic overtones.
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The fundamental is the frequency at which the entire wave vibrates. Overtones are other sinusoidal components present at frequencies above the fundamental. All of the frequency components that make up the total waveform, including the fundamental and the overtones, are called partials. Together they
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Consider a spring, fixed at one end and having a mass attached to the other; this would be a single degree of freedom (SDoF) oscillator. Once set into motion, it will oscillate at its natural frequency. For a single degree of freedom oscillator, a system in which the motion can be described by a
714:. A harmonic is any member of the harmonic series, an ideal set of frequencies that are positive integer multiples of a common fundamental frequency. The reason a fundamental is also considered a harmonic is because it is 1 times itself. 81:, the fundamental frequency is the lowest frequency sinusoidal in the sum of harmonically related frequencies, or the frequency of the difference between adjacent frequencies. In some contexts, the fundamental is usually abbreviated as 729:. The numbering of the partials and harmonics is then usually the same; the second partial is the second harmonic, etc. But if there are inharmonic partials, the numbering no longer coincides. Overtones are numbered as they appear 1101: 1003: 906: 1318: 806: 235: 332:
also satisfies this definition, the fundamental period is defined as the smallest period over which the function may be described completely. The fundamental frequency is defined as its reciprocal:
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harmonic). As this can result in confusion, only harmonics are usually referred to by their numbers, and overtones and partials are described by their relationships to those harmonics.
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single coordinate, the natural frequency depends on two system properties: mass and stiffness; (providing the system is undamped). The natural frequency, or fundamental frequency,
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Since the fundamental is the lowest frequency and is also perceived as the loudest, the ear identifies it as the specific pitch of the musical tone [
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All sinusoidal and many non-sinusoidal waveforms repeat exactly over time – they are periodic. The period of a waveform is the smallest positive value
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is the speed of the wave, the fundamental frequency can be found in terms of the speed of the wave and the length of the pipe:
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over the full length of a string or air column, or a higher harmonic chosen by the player. The fundamental is one of the
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If the ends of the same pipe are now both closed or both opened, the wavelength of the fundamental harmonic becomes
2203: 1326: 140:].... The individual partials are not heard separately but are blended together by the ear into a single tone. 1154: 1237: 1820: 1070: 1404: 649: 577: 337: 703: 74: 1854: 1552: 2323: 1962: 1673: 1182: 1075: 466: 1813: 1728: 2313: 1973: 1921: 1608: 1465: 1433: 1045: 1939: 1547: 1457: 1297: 1946: 1688: 1490: 379: 308:
is all that is required to describe the waveform completely (for example, by the associated
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with one end closed and the other end open the wavelength of the fundamental harmonic is
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To determine the natural frequency in Hz, the omega value is divided by 2
644:. By the same method as above, the fundamental frequency is found to be 2083: 2078: 2073: 1902: 1880: 1841: 1759: 1749: 1535: 2125: 2063: 2018: 1956: 1540: 1470: 1449: 1380: 818: 707: 78: 59: 25: 288:. This means that the waveform's values over any interval of length 2292: 2287: 2255: 2240: 2140: 2093: 2036: 1925: 1635: 1603: 711: 104: 66: 33: 2160: 2135: 2118: 2113: 2046: 2031: 1581: 1207:"Standing Wave in a Tube II – Finding the Fundamental Frequency" 2271: 2234: 2212: 2130: 2108: 2098: 2068: 801:{\displaystyle \omega _{\mathrm {0} }={\sqrt {\frac {k}{m}}}\,} 940:, the frequency of the 1st mode is the fundamental frequency. 230:{\displaystyle x(t)=x(t+T){\text{ for all }}t\in \mathbb {R} } 2250: 2155: 1754: 1107: 1050: 407: 122: 121:, etc. In this context, the zeroth harmonic would be 0  1418: 1912: 1835: 1744: 94:. In other contexts, it is more common to abbreviate it as 2181: 926:= stiffness of the spring (SI unit: newtons/metre or N/m) 376:
When the units of time are seconds, the frequency is in
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Lowest frequency of a periodic waveform, such as sound
1212:. Nchsdduncanapphysics.wikispaces.com. Archived from 951: 854: 769: 652: 627: 580: 558: 509: 469: 444: 424: 382: 340: 318: 294: 274: 245: 177: 155: 1029:= mass per unit length of the string (SI unit: kg/m) 461:, as indicated by the first two animations. Hence, 997: 900: 800: 683: 636: 611: 564: 542: 491: 453: 430: 413: 398: 366: 324: 300: 280: 260: 229: 161: 2305: 1346:Benward, Bruce and Saker, Marilyn (1997/2003). 543:{\displaystyle \lambda _{0}={\frac {v}{f_{0}}}} 32:in a string, The fundamental and the first six 2197: 1821: 1434: 1176:"Fundamental Frequency of Continuous Signals" 761:, can be found using the following equation: 721:The fundamental frequency is considered the 1181:. Fourier.eng.hmc.edu. 2011. Archived from 1155:"Phonetics and Theory of Speech Production" 733:the fundamental. So strictly speaking, the 706:present. The fundamental may be created by 69:. In music, the fundamental is the musical 2204: 2190: 1828: 1814: 1441: 1427: 836:= natural frequency in radians per second. 702:of a note that is perceived as the lowest 73:of a note that is perceived as the lowest 1350:, Vol. I, 7th ed.; p. xiii. McGraw-Hill. 1035:= tension on the string (SI unit: newton) 994: 897: 797: 698:In music, the fundamental is the musical 223: 1377:Music, Cognition, and Computerized Sound 1152: 77:present. In terms of a superposition of 20: 1264: 1023:= length of the string (SI unit: metre) 2306: 1367: 1240:. Physics.Kennesaw.edu. Archived from 2185: 1809: 1422: 748: 684:{\displaystyle f_{0}={\frac {v}{2L}}} 612:{\displaystyle f_{0}={\frac {v}{4L}}} 1017:= natural frequency (SI unit: hertz) 920:= natural frequency (SI unit: hertz) 367:{\displaystyle f_{0}={\frac {1}{T}}} 1099: 1071:Harmonic series (music)#Terminology 128:According to Benward's and Saker's 13: 90:, indicating the lowest frequency 43:, often referred to simply as the 14: 2340: 1325:. Open University. Archived from 169:for which the following is true: 1790: 1789: 1502: 1131:. Phon.UCL.ac.uk. Archived from 312:). Since any multiple of period 1397: 1361: 1340: 1300:. Hyperphysics.phy-astr.gsu.edu 492:{\displaystyle \lambda _{0}=4L} 414:Fundamental frequency of a pipe 107:. (The second harmonic is then 1311: 1290: 1272:. Colorado.edu. Archived from 1258: 1230: 1199: 1168: 1146: 1121: 1102:"Som, intensidade, frequĂȘncia" 1093: 501:Therefore, using the relation 255: 249: 208: 196: 187: 181: 144: 1: 1448: 1405:"About the String Calculator" 1348:Music: In Theory and Practice 1086: 268:is the value of the waveform 130:Music: In Theory and Practice 2329:Spectrum (physical sciences) 1298:"Standing Waves on a String" 1267:"Phys 1240: Sound and Music" 1106:Instituto de BiociĂȘncias da 58:), is defined as the lowest 7: 1375:. In Cook, Perry R. (ed.). 1039: 943:This is also expressed as: 693: 10: 2347: 2211: 2219: 2017: 1963:Music On A Long Thin Wire 1866: 1852: 1785: 1737: 1666: 1563: 1521: 1497: 1456: 1319:"Creating musical sounds" 1238:"Physics: Standing Waves" 1076:Pitch detection algorithm 741:partial (and usually the 1859:Hornbostel–Sachs numbers 1265:Pollock, Steven (2005). 1100:Nishida, Silvia Mitiko. 1466:Architectural acoustics 1373:"Consonance and Scales" 1153:Lemmetty, Sami (1999). 1046:Greatest common divisor 1940:Long-string instrument 1553:Fletcher–Munson curves 1548:Equal-loudness contour 1458:Acoustical engineering 1409:www.wirestrungharp.com 999: 902: 802: 685: 638: 613: 566: 544: 493: 455: 432: 400: 399:{\displaystyle s^{-1}} 368: 326: 302: 282: 262: 231: 163: 142: 36: 2229:Fundamental frequency 1689:Hermann von Helmholtz 1587:Fundamental frequency 1491:Sympathetic resonance 1000: 932:= mass (SI unit: kg). 903: 803: 686: 639: 614: 567: 545: 494: 456: 433: 418:For a pipe of length 401: 369: 327: 303: 283: 263: 232: 164: 134: 41:fundamental frequency 24: 949: 852: 767: 650: 625: 578: 556: 507: 467: 442: 422: 380: 338: 316: 292: 272: 261:{\displaystyle x(t)} 243: 175: 153: 1709:Werner Meyer-Eppler 1619:Missing fundamental 1056:Missing fundamental 213: for all  2283:Sympathetic string 1947:Melde's experiment 1592:Frequency spectrum 1157:. Acoustics.hut.fi 1081:Scale of harmonics 995: 898: 798: 749:Mechanical systems 681: 637:{\displaystyle 2L} 634: 609: 562: 540: 489: 454:{\displaystyle 4L} 451: 428: 396: 364: 322: 298: 278: 258: 227: 159: 92:counting from zero 37: 2301: 2300: 2278:Spectral envelope 2179: 2178: 1935:Longitudinal wave 1803: 1802: 1765:Musical acoustics 1597:harmonic spectrum 1390:978-0-262-53190-0 1356:978-0-07-294262-0 1061:Natural frequency 992: 991: 980: 895: 894: 883: 795: 794: 679: 607: 565:{\displaystyle v} 538: 431:{\displaystyle L} 362: 325:{\displaystyle T} 301:{\displaystyle T} 281:{\displaystyle t} 214: 162:{\displaystyle T} 138:harmonic spectrum 2336: 2324:Fourier analysis 2206: 2199: 2192: 2183: 2182: 1999:String vibration 1830: 1823: 1816: 1807: 1806: 1793: 1792: 1694:Carleen Hutchins 1626:Combination tone 1513: 1506: 1486:String vibration 1443: 1436: 1429: 1420: 1419: 1413: 1412: 1401: 1395: 1394: 1365: 1359: 1344: 1338: 1337: 1335: 1334: 1315: 1309: 1308: 1306: 1305: 1294: 1288: 1287: 1285: 1284: 1278: 1271: 1262: 1256: 1255: 1253: 1252: 1246: 1234: 1228: 1227: 1225: 1224: 1218: 1211: 1203: 1197: 1196: 1194: 1193: 1187: 1180: 1172: 1166: 1165: 1163: 1162: 1150: 1144: 1143: 1141: 1140: 1125: 1119: 1118: 1116: 1115: 1097: 1004: 1002: 1001: 996: 993: 984: 983: 981: 979: 968: 963: 962: 961: 907: 905: 904: 899: 896: 887: 886: 884: 882: 871: 866: 865: 864: 807: 805: 804: 799: 796: 787: 786: 781: 780: 779: 737:overtone is the 690: 688: 687: 682: 680: 678: 667: 662: 661: 643: 641: 640: 635: 618: 616: 615: 610: 608: 606: 595: 590: 589: 571: 569: 568: 563: 549: 547: 546: 541: 539: 537: 536: 524: 519: 518: 498: 496: 495: 490: 479: 478: 460: 458: 457: 452: 437: 435: 434: 429: 406:, also known as 405: 403: 402: 397: 395: 394: 373: 371: 370: 365: 363: 355: 350: 349: 331: 329: 328: 323: 307: 305: 304: 299: 287: 285: 284: 279: 267: 265: 264: 259: 236: 234: 233: 228: 226: 215: 212: 168: 166: 165: 160: 49:(abbreviated as 2346: 2345: 2339: 2338: 2337: 2335: 2334: 2333: 2304: 2303: 2302: 2297: 2246:Microinflection 2224:Colors of noise 2215: 2210: 2180: 2175: 2084:Japanese fiddle 2022: 2013: 2004:Transverse wave 1952:Mersenne's laws 1930:String harmonic 1862: 1848: 1834: 1804: 1799: 1781: 1733: 1724:D. Van Holliday 1662: 1631:Mersenne's laws 1565:Audio frequency 1559: 1523:Psychoacoustics 1517: 1516: 1509: 1495: 1452: 1447: 1417: 1416: 1403: 1402: 1398: 1391: 1369:Pierce, John R. 1366: 1362: 1345: 1341: 1332: 1330: 1317: 1316: 1312: 1303: 1301: 1296: 1295: 1291: 1282: 1280: 1276: 1269: 1263: 1259: 1250: 1248: 1244: 1236: 1235: 1231: 1222: 1220: 1216: 1209: 1205: 1204: 1200: 1191: 1189: 1185: 1178: 1174: 1173: 1169: 1160: 1158: 1151: 1147: 1138: 1136: 1127: 1126: 1122: 1113: 1111: 1098: 1094: 1089: 1042: 1034: 1028: 1022: 1016: 1013: 1005: 982: 972: 967: 957: 956: 952: 950: 947: 946: 931: 925: 919: 916: 908: 885: 875: 870: 860: 859: 855: 853: 850: 849: 845: 835: 832: 826: 816: 808: 785: 775: 774: 770: 768: 765: 764: 760: 757: 751: 696: 691: 671: 666: 657: 653: 651: 648: 647: 626: 623: 622: 619: 599: 594: 585: 581: 579: 576: 575: 557: 554: 553: 550: 532: 528: 523: 514: 510: 508: 505: 504: 499: 474: 470: 468: 465: 464: 443: 440: 439: 423: 420: 419: 416: 387: 383: 381: 378: 377: 374: 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1738:Related topics 1735: 1734: 1732: 1731: 1726: 1721: 1719:Joseph Sauveur 1716: 1711: 1706: 1704:Marin Mersenne 1701: 1696: 1691: 1686: 1681: 1676: 1670: 1668: 1664: 1663: 1661: 1660: 1655: 1654: 1653: 1643: 1638: 1633: 1628: 1623: 1622: 1621: 1616: 1611: 1601: 1600: 1599: 1589: 1584: 1579: 1573: 1571: 1561: 1560: 1558: 1557: 1556: 1555: 1545: 1544: 1543: 1538: 1527: 1525: 1519: 1518: 1515: 1514: 1507: 1499: 1498: 1496: 1494: 1493: 1488: 1483: 1478: 1473: 1468: 1462: 1460: 1454: 1453: 1446: 1445: 1438: 1431: 1423: 1415: 1414: 1396: 1389: 1360: 1339: 1310: 1289: 1257: 1229: 1198: 1167: 1145: 1120: 1091: 1090: 1088: 1085: 1084: 1083: 1078: 1073: 1068: 1063: 1058: 1053: 1048: 1041: 1038: 1037: 1036: 1032: 1030: 1026: 1024: 1020: 1018: 1014: 1011: 990: 987: 978: 975: 971: 966: 960: 955: 945: 938:modal analysis 936:While doing a 934: 933: 929: 927: 923: 921: 917: 914: 893: 890: 881: 878: 874: 869: 863: 858: 848: 841: 838: 837: 833: 830: 828: 824: 822: 814: 793: 790: 784: 778: 773: 763: 758: 755: 750: 747: 732: 723:first harmonic 695: 692: 677: 674: 670: 665: 660: 656: 646: 633: 630: 605: 602: 598: 593: 588: 584: 574: 561: 535: 531: 527: 522: 517: 513: 503: 488: 485: 482: 477: 473: 463: 450: 447: 427: 415: 412: 393: 390: 386: 361: 358: 353: 348: 344: 334: 321: 310:Fourier series 297: 277: 257: 254: 251: 248: 225: 221: 218: 210: 207: 204: 201: 198: 195: 192: 189: 186: 183: 180: 171: 158: 146: 143: 118: 115: 111: 108: 99: 96: 86: 83: 54: 51: 30:standing waves 15: 9: 6: 4: 3: 2: 2342: 2341: 2330: 2327: 2325: 2322: 2320: 2317: 2315: 2312: 2311: 2309: 2294: 2291: 2289: 2286: 2284: 2281: 2279: 2276: 2274: 2273: 2269: 2267: 2264: 2262: 2259: 2257: 2254: 2252: 2249: 2247: 2244: 2242: 2239: 2237: 2236: 2232: 2230: 2227: 2225: 2222: 2221: 2218: 2214: 2207: 2202: 2200: 2195: 2193: 2188: 2187: 2184: 2172: 2169: 2167: 2164: 2162: 2159: 2157: 2154: 2152: 2151:Tromba marina 2149: 2147: 2144: 2142: 2139: 2137: 2134: 2132: 2129: 2127: 2124: 2120: 2117: 2115: 2112: 2110: 2107: 2105: 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1659: 1656: 1652: 1649: 1648: 1647: 1646:Standing wave 1644: 1642: 1639: 1637: 1634: 1632: 1629: 1627: 1624: 1620: 1617: 1615: 1614:Inharmonicity 1612: 1610: 1607: 1606: 1605: 1602: 1598: 1595: 1594: 1593: 1590: 1588: 1585: 1583: 1580: 1578: 1575: 1574: 1572: 1570: 1566: 1562: 1554: 1551: 1550: 1549: 1546: 1542: 1539: 1537: 1534: 1533: 1532: 1529: 1528: 1526: 1524: 1520: 1512: 1508: 1505: 1501: 1500: 1492: 1489: 1487: 1484: 1482: 1481:Soundproofing 1479: 1477: 1476:Reverberation 1474: 1472: 1469: 1467: 1464: 1463: 1461: 1459: 1455: 1451: 1444: 1439: 1437: 1432: 1430: 1425: 1424: 1421: 1410: 1406: 1400: 1392: 1386: 1382: 1378: 1374: 1370: 1364: 1357: 1353: 1349: 1343: 1329:on 2020-04-09 1328: 1324: 1320: 1314: 1299: 1293: 1279:on 2014-05-15 1275: 1268: 1261: 1247:on 2019-12-15 1243: 1239: 1233: 1219:on 2014-03-13 1215: 1208: 1202: 1188:on 2014-05-14 1184: 1177: 1171: 1156: 1149: 1135:on 2013-01-06 1134: 1130: 1124: 1110: 1109: 1103: 1096: 1092: 1082: 1079: 1077: 1074: 1072: 1069: 1067: 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Retrieved 1327:the original 1322: 1313: 1302:. Retrieved 1292: 1281:. Retrieved 1274:the original 1260: 1249:. Retrieved 1242:the original 1232: 1221:. Retrieved 1214:the original 1201: 1190:. Retrieved 1183:the original 1170: 1159:. Retrieved 1148: 1137:. Retrieved 1133:the original 1123: 1112:. Retrieved 1105: 1095: 1006: 942: 935: 909: 839: 809: 752: 742: 738: 734: 726: 722: 720: 716: 697: 620: 551: 500: 417: 375: 238: 148: 135: 129: 127: 103:, the first 95: 82: 50: 45: 44: 40: 38: 18: 2146:Psalmodicon 2059:Diddley bow 1918:Fundamental 1908:Fingerboard 1888:Chordophone 1846:instruments 1699:Franz Melde 1674:John Backus 1658:Subharmonic 1511:Spectrogram 1066:Oscillation 145:Explanation 46:fundamental 2308:Categories 2079:Ichigenkin 2074:Ground bow 2019:Monochords 2009:Tuning peg 1989:Soundboard 1903:Enharmonic 1760:Ultrasound 1750:Infrasound 1536:Bark scale 1333:2014-06-04 1304:2012-11-27 1283:2012-11-27 1251:2012-11-27 1223:2012-11-27 1192:2012-11-27 1161:2012-11-27 1139:2012-11-27 1114:2024-09-05 1087:References 2319:Acoustics 2126:Langeleik 2064:Duxianqin 1957:Monochord 1926:Overtones 1922:Harmonics 1641:Resonance 1541:Mel scale 1471:Monochord 1450:Acoustics 1381:MIT Press 1323:OpenLearn 989:μ 880:π 819:stiffness 772:ω 712:harmonics 708:vibration 512:λ 472:λ 389:− 220:∈ 79:sinusoids 60:frequency 34:overtones 26:Vibration 2293:Waveform 2288:Tonality 2256:Overtone 2241:Loudness 2141:Onavillu 2094:Genggong 2089:Jaw harp 2037:Berimbau 1979:Re-entry 1836:Musical 1795:Category 1636:Overtone 1604:Harmonic 1371:(2001). 1040:See also 725:and the 694:In music 105:harmonic 67:waveform 64:periodic 2161:Umuduri 2136:Masenqo 2119:Mukkuri 2114:Morsing 2054:Đàn báș§u 2047:Boom-ba 2032:Ahardin 1838:strings 1582:Formant 1129:"sidfn" 1007:where: 910:where: 846:. Or: 810:where: 704:partial 75:partial 2272:Sawari 2235:Jivari 2213:Timbre 2166:Unitar 2131:Lesiba 2109:Kubing 2104:Khomuz 2099:Gogona 2069:Ektara 1893:Course 1876:Bridge 1844:, and 1775:Violin 1609:Series 1387:  1354:  827:= mass 743:second 739:second 552:where 239:Where 2261:Pitch 2251:Noise 2156:Tumbi 1898:Drone 1842:wires 1770:Piano 1755:Sound 1569:pitch 1531:Pitch 1277:(PDF) 1270:(PDF) 1245:(PDF) 1217:(PDF) 1210:(PDF) 1186:(PDF) 1179:(PDF) 1108:Unesp 1051:Hertz 735:first 731:above 700:pitch 408:Hertz 71:pitch 62:of a 1969:Node 1913:Fret 1855:List 1745:Echo 1651:Node 1577:Beat 1567:and 1385:ISBN 1352:ISBN 114:= 2⋅ 39:The 28:and 2021:and 1974:Nut 1871:Bow 125:.) 2310:: 1840:, 1407:. 1383:. 1379:. 1321:. 1104:. 817:= 410:. 132:: 123:Hz 2205:e 2198:t 2191:v 1928:/ 1924:/ 1920:/ 1861:) 1857:( 1829:e 1822:t 1815:v 1442:e 1435:t 1428:v 1411:. 1393:. 1358:. 1336:. 1307:. 1286:. 1254:. 1226:. 1195:. 1164:. 1142:. 1117:. 1033:T 1027:ÎŒ 1021:l 1015:0 1012:f 986:T 977:l 974:2 970:1 965:= 959:0 954:f 930:m 924:k 918:0 915:f 892:m 889:k 877:2 873:1 868:= 862:0 857:f 843:π 834:0 831:ω 825:m 815:k 792:m 789:k 783:= 777:0 759:0 756:ω 676:L 673:2 669:v 664:= 659:0 655:f 632:L 629:2 604:L 601:4 597:v 592:= 587:0 583:f 560:v 534:0 530:f 526:v 521:= 516:0 487:L 484:4 481:= 476:0 449:L 446:4 426:L 392:1 385:s 360:T 357:1 352:= 347:0 343:f 320:T 296:T 276:t 256:) 253:t 250:( 247:x 224:R 217:t 209:) 206:T 203:+ 200:t 197:( 194:x 191:= 188:) 185:t 182:( 179:x 157:T 119:1 116:f 112:2 109:f 100:1 97:f 87:0 84:f 55:0 52:f

Index


Vibration
standing waves
overtones
frequency
periodic
waveform
pitch
partial
sinusoids
counting from zero
harmonic
Hz
harmonic spectrum
Fourier series
Hertz
pitch
partial
vibration
harmonics
stiffness
π
modal analysis
Greatest common divisor
Hertz
Missing fundamental
Natural frequency
Oscillation
Harmonic series (music)#Terminology
Pitch detection algorithm

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