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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
725:. 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. 92:, 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 740:. 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 1112: 1014: 917: 1329: 817: 246: 343:
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
2214: 1337: 151:].... The individual partials are not heard separately but are blended together by the ear into a single tone. 1165: 1248: 1831: 1081: 1415: 660: 588: 348: 714: 85: 1865: 1563: 2334: 1973: 1684: 1193: 1086: 477: 1824: 1739: 2324: 1984: 1932: 1619: 1476: 1444: 1056: 1950: 1558: 1468: 1308: 1957: 1699: 1501: 390: 319:
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
655:. By the same method as above, the fundamental frequency is found to be 2094: 2089: 2084: 1913: 1891: 1852: 1770: 1760: 1546: 2136: 2074: 2029: 1967: 1551: 1481: 1460: 1391: 829: 718: 89: 70: 36: 299:. This means that the waveform's values over any interval of length 2303: 2298: 2266: 2251: 2151: 2104: 2047: 1936: 1646: 1614: 722: 115: 77: 44: 2171: 2146: 2129: 2124: 2057: 2042: 1592: 1218:"Standing Wave in a Tube II – Finding the Fundamental Frequency" 2282: 2245: 2223: 2141: 2119: 2109: 2079: 812:{\displaystyle \omega _{\mathrm {0} }={\sqrt {\frac {k}{m}}}\,} 951:, the frequency of the 1st mode is the fundamental frequency. 241:{\displaystyle x(t)=x(t+T){\text{ for all }}t\in \mathbb {R} } 2261: 2166: 1765: 1118: 1061: 418: 133: 132:, etc. In this context, the zeroth harmonic would be 0  1429: 1923: 1846: 1755: 105:. In other contexts, it is more common to abbreviate it as 2192: 937:= stiffness of the spring (SI unit: newtons/metre or N/m) 387:
When the units of time are seconds, the frequency is in
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Lowest frequency of a periodic waveform, such as sound
1223:. Nchsdduncanapphysics.wikispaces.com. Archived from 962: 865: 780: 663: 638: 591: 569: 520: 480: 455: 435: 393: 351: 329: 305: 285: 256: 188: 166: 1040:= mass per unit length of the string (SI unit: kg/m) 472:, as indicated by the first two animations. Hence, 1008: 911: 811: 694: 647: 622: 575: 553: 502: 464: 441: 424: 409: 377: 335: 311: 291: 271: 240: 172: 2316: 1357:Benward, Bruce and Saker, Marilyn (1997/2003). 554:{\displaystyle \lambda _{0}={\frac {v}{f_{0}}}} 43:in a string, The fundamental and the first six 2208: 1832: 1445: 1187:"Fundamental Frequency of Continuous Signals" 772:, can be found using the following equation: 732:The fundamental frequency is considered the 1192:. Fourier.eng.hmc.edu. 2011. Archived from 1166:"Phonetics and Theory of Speech Production" 744:the fundamental. So strictly speaking, the 717:present. The fundamental may be created by 80:. In music, the fundamental is the musical 2215: 2201: 1839: 1825: 1452: 1438: 847:= natural frequency in radians per second. 713:of a note that is perceived as the lowest 84:of a note that is perceived as the lowest 1361:, Vol. I, 7th ed.; p. xiii. McGraw-Hill. 1046:= tension on the string (SI unit: newton) 1005: 908: 808: 709:In music, the fundamental is the musical 234: 1388:Music, Cognition, and Computerized Sound 1163: 88:present. In terms of a superposition of 31: 1275: 1034:= length of the string (SI unit: metre) 14: 2317: 1378: 1251:. Physics.Kennesaw.edu. Archived from 2196: 1820: 1433: 759: 695:{\displaystyle f_{0}={\frac {v}{2L}}} 623:{\displaystyle f_{0}={\frac {v}{4L}}} 1028:= natural frequency (SI unit: hertz) 931:= natural frequency (SI unit: hertz) 378:{\displaystyle f_{0}={\frac {1}{T}}} 1110: 1082:Harmonic series (music)#Terminology 139:According to Benward's and Saker's 24: 101:, indicating the lowest frequency 54:, often referred to simply as the 25: 2351: 1336:. Open University. Archived from 180:for which the following is true: 1801: 1800: 1513: 1142:. Phon.UCL.ac.uk. Archived from 323:). Since any multiple of period 1408: 1372: 1351: 1311:. Hyperphysics.phy-astr.gsu.edu 503:{\displaystyle \lambda _{0}=4L} 425:Fundamental frequency of a pipe 118:. (The second harmonic is then 1322: 1301: 1283:. Colorado.edu. Archived from 1269: 1241: 1210: 1179: 1157: 1132: 1113:"Som, intensidade, frequĂȘncia" 1104: 512:Therefore, using the relation 266: 260: 219: 207: 198: 192: 155: 13: 1: 1459: 1416:"About the String Calculator" 1359:Music: In Theory and Practice 1097: 279:is the value of the waveform 141:Music: In Theory and Practice 2340:Spectrum (physical sciences) 1309:"Standing Waves on a String" 1278:"Phys 1240: Sound and Music" 1117:Instituto de BiociĂȘncias da 69:), is defined as the lowest 7: 1386:. In Cook, Perry R. (ed.). 1050: 954:This is also expressed as: 704: 10: 2356: 2222: 2230: 2028: 1974:Music On A Long Thin Wire 1877: 1863: 1796: 1748: 1677: 1574: 1532: 1508: 1467: 1330:"Creating musical sounds" 1249:"Physics: Standing Waves" 1087:Pitch detection algorithm 752:partial (and usually the 1870:Hornbostel–Sachs numbers 1276:Pollock, Steven (2005). 1111:Nishida, Silvia Mitiko. 1477:Architectural acoustics 1384:"Consonance and Scales" 1164:Lemmetty, Sami (1999). 1057:Greatest common divisor 18:Fundamental frequencies 1951:Long-string instrument 1564:Fletcher–Munson curves 1559:Equal-loudness contour 1469:Acoustical engineering 1420:www.wirestrungharp.com 1010: 913: 813: 696: 649: 624: 577: 555: 504: 466: 443: 411: 410:{\displaystyle s^{-1}} 379: 337: 313: 293: 273: 242: 174: 153: 47: 2240:Fundamental frequency 1700:Hermann von Helmholtz 1598:Fundamental frequency 1502:Sympathetic resonance 1011: 943:= mass (SI unit: kg). 914: 814: 697: 650: 625: 578: 556: 505: 467: 444: 429:For a pipe of length 412: 380: 338: 314: 294: 274: 243: 175: 145: 52:fundamental frequency 35: 960: 863: 778: 661: 636: 589: 567: 518: 478: 453: 433: 391: 349: 327: 303: 283: 272:{\displaystyle x(t)} 254: 186: 164: 1720:Werner Meyer-Eppler 1630:Missing fundamental 1067:Missing fundamental 224: for all  2294:Sympathetic string 1958:Melde's experiment 1603:Frequency spectrum 1168:. Acoustics.hut.fi 1092:Scale of harmonics 1006: 909: 809: 760:Mechanical systems 692: 648:{\displaystyle 2L} 645: 620: 573: 551: 500: 465:{\displaystyle 4L} 462: 439: 407: 375: 333: 309: 289: 269: 238: 170: 103:counting from zero 48: 2312: 2311: 2289:Spectral envelope 2190: 2189: 1946:Longitudinal wave 1814: 1813: 1776:Musical acoustics 1608:harmonic spectrum 1401:978-0-262-53190-0 1367:978-0-07-294262-0 1072:Natural frequency 1003: 1002: 991: 906: 905: 894: 806: 805: 690: 618: 576:{\displaystyle v} 549: 442:{\displaystyle L} 373: 336:{\displaystyle T} 312:{\displaystyle T} 292:{\displaystyle t} 225: 173:{\displaystyle T} 149:harmonic spectrum 16:(Redirected from 2347: 2335:Fourier analysis 2217: 2210: 2203: 2194: 2193: 2010:String vibration 1841: 1834: 1827: 1818: 1817: 1804: 1803: 1705:Carleen Hutchins 1637:Combination tone 1524: 1517: 1497:String vibration 1454: 1447: 1440: 1431: 1430: 1424: 1423: 1412: 1406: 1405: 1376: 1370: 1355: 1349: 1348: 1346: 1345: 1326: 1320: 1319: 1317: 1316: 1305: 1299: 1298: 1296: 1295: 1289: 1282: 1273: 1267: 1266: 1264: 1263: 1257: 1245: 1239: 1238: 1236: 1235: 1229: 1222: 1214: 1208: 1207: 1205: 1204: 1198: 1191: 1183: 1177: 1176: 1174: 1173: 1161: 1155: 1154: 1152: 1151: 1136: 1130: 1129: 1127: 1126: 1108: 1015: 1013: 1012: 1007: 1004: 995: 994: 992: 990: 979: 974: 973: 972: 918: 916: 915: 910: 907: 898: 897: 895: 893: 882: 877: 876: 875: 818: 816: 815: 810: 807: 798: 797: 792: 791: 790: 748:overtone is the 701: 699: 698: 693: 691: 689: 678: 673: 672: 654: 652: 651: 646: 629: 627: 626: 621: 619: 617: 606: 601: 600: 582: 580: 579: 574: 560: 558: 557: 552: 550: 548: 547: 535: 530: 529: 509: 507: 506: 501: 490: 489: 471: 469: 468: 463: 448: 446: 445: 440: 417:, also known as 416: 414: 413: 408: 406: 405: 384: 382: 381: 376: 374: 366: 361: 360: 342: 340: 339: 334: 318: 316: 315: 310: 298: 296: 295: 290: 278: 276: 275: 270: 247: 245: 244: 239: 237: 226: 223: 179: 177: 176: 171: 60:(abbreviated as 21: 2355: 2354: 2350: 2349: 2348: 2346: 2345: 2344: 2315: 2314: 2313: 2308: 2257:Microinflection 2235:Colors of noise 2226: 2221: 2191: 2186: 2095:Japanese fiddle 2033: 2024: 2015:Transverse wave 1963:Mersenne's laws 1941:String harmonic 1873: 1859: 1845: 1815: 1810: 1792: 1744: 1735:D. Van Holliday 1673: 1642:Mersenne's laws 1576:Audio frequency 1570: 1534:Psychoacoustics 1528: 1527: 1520: 1506: 1463: 1458: 1428: 1427: 1414: 1413: 1409: 1402: 1380:Pierce, John R. 1377: 1373: 1356: 1352: 1343: 1341: 1328: 1327: 1323: 1314: 1312: 1307: 1306: 1302: 1293: 1291: 1287: 1280: 1274: 1270: 1261: 1259: 1255: 1247: 1246: 1242: 1233: 1231: 1227: 1220: 1216: 1215: 1211: 1202: 1200: 1196: 1189: 1185: 1184: 1180: 1171: 1169: 1162: 1158: 1149: 1147: 1138: 1137: 1133: 1124: 1122: 1109: 1105: 1100: 1053: 1045: 1039: 1033: 1027: 1024: 1016: 993: 983: 978: 968: 967: 963: 961: 958: 957: 942: 936: 930: 927: 919: 896: 886: 881: 871: 870: 866: 864: 861: 860: 856: 846: 843: 837: 827: 819: 796: 786: 785: 781: 779: 776: 775: 771: 768: 762: 707: 702: 682: 677: 668: 664: 662: 659: 658: 637: 634: 633: 630: 610: 605: 596: 592: 590: 587: 586: 568: 565: 564: 561: 543: 539: 534: 525: 521: 519: 516: 515: 510: 485: 481: 479: 476: 475: 454: 451: 450: 434: 431: 430: 427: 398: 394: 392: 389: 388: 385: 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1750: 1749:Related topics 1746: 1745: 1743: 1742: 1737: 1732: 1730:Joseph Sauveur 1727: 1722: 1717: 1715:Marin Mersenne 1712: 1707: 1702: 1697: 1692: 1687: 1681: 1679: 1675: 1674: 1672: 1671: 1666: 1665: 1664: 1654: 1649: 1644: 1639: 1634: 1633: 1632: 1627: 1622: 1612: 1611: 1610: 1600: 1595: 1590: 1584: 1582: 1572: 1571: 1569: 1568: 1567: 1566: 1556: 1555: 1554: 1549: 1538: 1536: 1530: 1529: 1526: 1525: 1518: 1510: 1509: 1507: 1505: 1504: 1499: 1494: 1489: 1484: 1479: 1473: 1471: 1465: 1464: 1457: 1456: 1449: 1442: 1434: 1426: 1425: 1407: 1400: 1371: 1350: 1321: 1300: 1268: 1240: 1209: 1178: 1156: 1131: 1102: 1101: 1099: 1096: 1095: 1094: 1089: 1084: 1079: 1074: 1069: 1064: 1059: 1052: 1049: 1048: 1047: 1043: 1041: 1037: 1035: 1031: 1029: 1025: 1022: 1001: 998: 989: 986: 982: 977: 971: 966: 956: 949:modal analysis 947:While doing a 945: 944: 940: 938: 934: 932: 928: 925: 904: 901: 892: 889: 885: 880: 874: 869: 859: 852: 849: 848: 844: 841: 839: 835: 833: 825: 804: 801: 795: 789: 784: 774: 769: 766: 761: 758: 743: 734:first harmonic 706: 703: 688: 685: 681: 676: 671: 667: 657: 644: 641: 616: 613: 609: 604: 599: 595: 585: 572: 546: 542: 538: 533: 528: 524: 514: 499: 496: 493: 488: 484: 474: 461: 458: 438: 426: 423: 404: 401: 397: 372: 369: 364: 359: 355: 345: 332: 321:Fourier series 308: 288: 268: 265: 262: 259: 236: 232: 229: 221: 218: 215: 212: 209: 206: 203: 200: 197: 194: 191: 182: 169: 157: 154: 129: 126: 122: 119: 110: 107: 97: 94: 65: 62: 41:standing waves 26: 9: 6: 4: 3: 2: 2352: 2341: 2338: 2336: 2333: 2331: 2328: 2326: 2323: 2322: 2320: 2305: 2302: 2300: 2297: 2295: 2292: 2290: 2287: 2285: 2284: 2280: 2278: 2275: 2273: 2270: 2268: 2265: 2263: 2260: 2258: 2255: 2253: 2250: 2248: 2247: 2243: 2241: 2238: 2236: 2233: 2232: 2229: 2225: 2218: 2213: 2211: 2206: 2204: 2199: 2198: 2195: 2183: 2180: 2178: 2175: 2173: 2170: 2168: 2165: 2163: 2162:Tromba marina 2160: 2158: 2155: 2153: 2150: 2148: 2145: 2143: 2140: 2138: 2135: 2131: 2128: 2126: 2123: 2121: 2118: 2116: 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1670: 1667: 1663: 1660: 1659: 1658: 1657:Standing wave 1655: 1653: 1650: 1648: 1645: 1643: 1640: 1638: 1635: 1631: 1628: 1626: 1625:Inharmonicity 1623: 1621: 1618: 1617: 1616: 1613: 1609: 1606: 1605: 1604: 1601: 1599: 1596: 1594: 1591: 1589: 1586: 1585: 1583: 1581: 1577: 1573: 1565: 1562: 1561: 1560: 1557: 1553: 1550: 1548: 1545: 1544: 1543: 1540: 1539: 1537: 1535: 1531: 1523: 1519: 1516: 1512: 1511: 1503: 1500: 1498: 1495: 1493: 1492:Soundproofing 1490: 1488: 1487:Reverberation 1485: 1483: 1480: 1478: 1475: 1474: 1472: 1470: 1466: 1462: 1455: 1450: 1448: 1443: 1441: 1436: 1435: 1432: 1421: 1417: 1411: 1403: 1397: 1393: 1389: 1385: 1381: 1375: 1368: 1364: 1360: 1354: 1340:on 2020-04-09 1339: 1335: 1331: 1325: 1310: 1304: 1290:on 2014-05-15 1286: 1279: 1272: 1258:on 2019-12-15 1254: 1250: 1244: 1230:on 2014-03-13 1226: 1219: 1213: 1199:on 2014-05-14 1195: 1188: 1182: 1167: 1160: 1146:on 2013-01-06 1145: 1141: 1135: 1121: 1120: 1114: 1107: 1103: 1093: 1090: 1088: 1085: 1083: 1080: 1078: 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Retrieved 1338:the original 1333: 1324: 1313:. Retrieved 1303: 1292:. Retrieved 1285:the original 1271: 1260:. Retrieved 1253:the original 1243: 1232:. Retrieved 1225:the original 1212: 1201:. Retrieved 1194:the original 1181: 1170:. Retrieved 1159: 1148:. Retrieved 1144:the original 1134: 1123:. Retrieved 1116: 1106: 1017: 953: 946: 920: 850: 820: 763: 753: 749: 745: 737: 733: 731: 727: 708: 631: 562: 511: 428: 386: 249: 159: 146: 140: 138: 114:, the first 106: 93: 61: 56: 55: 51: 49: 29: 2157:Psalmodicon 2070:Diddley bow 1929:Fundamental 1919:Fingerboard 1899:Chordophone 1857:instruments 1710:Franz Melde 1685:John Backus 1669:Subharmonic 1522:Spectrogram 1077:Oscillation 156:Explanation 57:fundamental 2319:Categories 2090:Ichigenkin 2085:Ground bow 2030:Monochords 2020:Tuning peg 2000:Soundboard 1914:Enharmonic 1771:Ultrasound 1761:Infrasound 1547:Bark scale 1344:2014-06-04 1315:2012-11-27 1294:2012-11-27 1262:2012-11-27 1234:2012-11-27 1203:2012-11-27 1172:2012-11-27 1150:2012-11-27 1125:2024-09-05 1098:References 2330:Acoustics 2137:Langeleik 2075:Duxianqin 1968:Monochord 1937:Overtones 1933:Harmonics 1652:Resonance 1552:Mel scale 1482:Monochord 1461:Acoustics 1392:MIT Press 1334:OpenLearn 1000:μ 891:π 830:stiffness 783:ω 723:harmonics 719:vibration 523:λ 483:λ 400:− 231:∈ 90:sinusoids 71:frequency 45:overtones 37:Vibration 2304:Waveform 2299:Tonality 2267:Overtone 2252:Loudness 2152:Onavillu 2105:Genggong 2100:Jaw harp 2048:Berimbau 1990:Re-entry 1847:Musical 1806:Category 1647:Overtone 1615:Harmonic 1382:(2001). 1051:See also 736:and the 705:In music 116:harmonic 78:waveform 75:periodic 2172:Umuduri 2147:Masenqo 2130:Mukkuri 2125:Morsing 2065:Đàn báș§u 2058:Boom-ba 2043:Ahardin 1849:strings 1593:Formant 1140:"sidfn" 1018:where: 921:where: 857:. Or: 821:where: 715:partial 86:partial 2283:Sawari 2246:Jivari 2224:Timbre 2177:Unitar 2142:Lesiba 2120:Kubing 2115:Khomuz 2110:Gogona 2080:Ektara 1904:Course 1887:Bridge 1855:, and 1786:Violin 1620:Series 1398:  1365:  838:= mass 754:second 750:second 563:where 250:Where 2272:Pitch 2262:Noise 2167:Tumbi 1909:Drone 1853:wires 1781:Piano 1766:Sound 1580:pitch 1542:Pitch 1288:(PDF) 1281:(PDF) 1256:(PDF) 1228:(PDF) 1221:(PDF) 1197:(PDF) 1190:(PDF) 1119:Unesp 1062:Hertz 746:first 742:above 711:pitch 419:Hertz 82:pitch 73:of a 1980:Node 1924:Fret 1866:List 1756:Echo 1662:Node 1588:Beat 1578:and 1396:ISBN 1363:ISBN 125:= 2⋅ 50:The 39:and 2032:and 1985:Nut 1882:Bow 136:.) 2321:: 1851:, 1418:. 1394:. 1390:. 1332:. 1115:. 828:= 421:. 143:: 134:Hz 2216:e 2209:t 2202:v 1939:/ 1935:/ 1931:/ 1872:) 1868:( 1840:e 1833:t 1826:v 1453:e 1446:t 1439:v 1422:. 1404:. 1369:. 1347:. 1318:. 1297:. 1265:. 1237:. 1206:. 1175:. 1153:. 1128:. 1044:T 1038:ÎŒ 1032:l 1026:0 1023:f 997:T 988:l 985:2 981:1 976:= 970:0 965:f 941:m 935:k 929:0 926:f 903:m 900:k 888:2 884:1 879:= 873:0 868:f 854:π 845:0 842:ω 836:m 826:k 803:m 800:k 794:= 788:0 770:0 767:ω 687:L 684:2 680:v 675:= 670:0 666:f 643:L 640:2 615:L 612:4 608:v 603:= 598:0 594:f 571:v 545:0 541:f 537:v 532:= 527:0 498:L 495:4 492:= 487:0 460:L 457:4 437:L 403:1 396:s 371:T 368:1 363:= 358:0 354:f 331:T 307:T 287:t 267:) 264:t 261:( 258:x 235:R 228:t 220:) 217:T 214:+ 211:t 208:( 205:x 202:= 199:) 196:t 193:( 190:x 168:T 130:1 127:f 123:2 120:f 111:1 108:f 98:0 95:f 66:0 63:f 20:)

Index

Fundamental frequencies

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

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