Skip to content

Instantly share code, notes, and snippets.

@matozoid

matozoid/sid_frequencies.csv

Last active May 5, 2025 23:42
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save matozoid/18cddcbc9cfade3c455bc6230e1f6da6 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save matozoid/18cddcbc9cfade3c455bc6230e1f6da6 to your computer and use it in GitHub Desktop.
Download ZIP
A table of frequencies for the Commodore 64 SID chip taken from various sources. It's a CSV, so it's machine readable! :-) :-)
Raw
sid_frequencies.csv
number name octave note in octave frequency (base 440Hz) frequency (base 435Hz) C64 manual frequency PAL frequency NTSC frequency PAL frequency 435Hz NTSC frequency 435Hz MIDI note number
0 C 0 0 16.351597831287414 16.165784219568238 268 278 268 275 265 24
1 C# 0 1 17.323914436054505 17.12705177200843 284 295 284 292 281 25
2 D 0 2 18.354047994837977 18.14547926762391 301 313 301 309 298 26
3 D# 0 3 19.445436482630058 19.224465613509263 318 331 319 327 315 27
4 E 0 4 20.601722307054366 20.367611826292386 337 351 338 347 334 28
5 F 0 5 21.826764464562746 21.578733050192717 358 372 358 367 354 29
6 F# 0 6 23.12465141947715 22.86187128971036 379 394 379 389 375 30
7 G 0 7 24.499714748859326 24.22130889944047 401 417 402 412 397 31
8 G# 0 8 25.956543598746574 25.661582876033545 425 442 426 437 421 32
9 A 0 9 27.5 27.1875 451 468 451 463 446 33
10 A# 0 10 29.13523509488062 28.80415287789334 477 496 478 490 473 34
11 B 0 11 30.86770632850775 30.516936938411074 506 526 506 520 501 35
12 C 1 0 32.70319566257483 32.331568439136475 536 557 536 551 530 36
13 C# 1 1 34.64782887210901 34.254103544016864 568 590 568 583 562 37
14 D 1 2 36.70809598967594 36.2909585352478 602 625 602 618 595 38
15 D# 1 3 38.890872965260115 38.44893122701853 637 662 638 655 631 39
16 E 1 4 41.20344461410875 40.735223652584786 675 702 676 694 668 40
17 F 1 5 43.653528929125486 43.15746610038542 716 743 716 735 708 41
18 F# 1 6 46.2493028389543 45.72374257942072 758 788 759 779 750 42
19 G 1 7 48.999429497718666 48.44261779888095 803 834 804 825 795 43
20 G# 1 8 51.91308719749314 51.32316575206708 851 884 852 874 842 44
21 A 1 9 55.0 54.375 902 937 902 926 892 45
22 A# 1 10 58.27047018976124 57.60830575578668 955 992 956 981 945 46
23 B 1 11 61.7354126570155 61.03387387682215 1012 1051 1013 1039 1001 47
24 C 2 0 65.40639132514966 64.66313687827295 1072 1114 1073 1101 1061 48
25 C# 2 1 69.29565774421802 68.50820708803373 1136 1180 1137 1167 1124 49
26 D 2 2 73.41619197935188 72.5819170704956 1204 1250 1204 1236 1191 50
27 D# 2 3 77.78174593052023 76.89786245403705 1275 1325 1276 1309 1261 51
28 E 2 4 82.4068892282175 81.47044730516957 1351 1403 1352 1387 1336 52
29 F 2 5 87.30705785825097 86.31493220077084 1432 1487 1432 1470 1416 53
30 F# 2 6 92.4986056779086 91.44748515884145 1517 1575 1517 1557 1500 54
31 G 2 7 97.99885899543733 96.8852355977619 1607 1669 1608 1650 1589 55
32 G# 2 8 103.82617439498628 102.64633150413415 1703 1768 1703 1748 1684 56
33 A 2 9 110.0 108.75 1804 1873 1804 1852 1784 57
34 A# 2 10 116.54094037952248 115.21661151157336 1911 1985 1912 1962 1890 58
35 B 2 11 123.47082531403103 122.06774775364431 2025 2103 2025 2079 2002 59
36 C 3 0 130.8127826502993 129.3262737565459 2145 2228 2146 2202 2122 60
37 C# 3 1 138.59131548843604 137.01641417606746 2273 2360 2274 2333 2248 61
38 D 3 2 146.8323839587038 145.16383414099124 2408 2500 2409 2472 2381 62
39 D# 3 3 155.56349186104046 153.7957249080741 2551 2649 2552 2619 2523 63
40 E 3 4 164.81377845643496 162.94089461033911 2703 2807 2704 2775 2673 64
41 F 3 5 174.61411571650194 172.6298644015417 2864 2973 2864 2940 2832 65
42 F# 3 6 184.9972113558172 182.8949703176829 3034 3150 3035 3114 3000 66
43 G 3 7 195.99771799087463 193.77047119552378 3215 3338 3215 3300 3179 67
44 G# 3 8 207.65234878997256 205.29266300826833 3406 3536 3406 3496 3368 68
45 A 3 9 220.0 217.5 3608 3746 3609 3704 3568 69
46 A# 3 10 233.08188075904496 230.43322302314672 3823 3969 3824 3924 3780 70
47 B 3 11 246.94165062806206 244.13549550728862 4050 4205 4051 4157 4005 71
48 C 4 0 261.6255653005986 258.6525475130918 4291 4455 4292 4404 4243 72
49 C# 4 1 277.1826309768721 274.0328283521349 4547 4720 4547 4666 4495 73
50 D 4 2 293.6647679174076 290.3276682819825 4817 5001 4817 4944 4763 74
51 D# 4 3 311.1269837220809 307.5914498161482 5103 5298 5104 5238 5046 75
52 E 4 4 329.6275569128699 325.88178922067823 5407 5613 5407 5549 5346 76
53 F 4 5 349.2282314330039 345.2597288030834 5728 5947 5729 5879 5664 77
54 F# 4 6 369.9944227116344 365.7899406353658 6069 6300 6070 6229 6001 78
55 G 4 7 391.99543598174927 387.54094239104757 6430 6675 6430 6599 6357 79
56 G# 4 8 415.3046975799451 410.58532601653667 6812 7072 6813 6992 6735 80
57 A 4 9 440.0 435.0 7217 7493 7218 7407 7136 81
58 A# 4 10 466.1637615180899 460.86644604629345 7647 7938 7647 7848 7560 82
59 B 4 11 493.8833012561241 488.27099101457725 8101 8410 8102 8314 8010 83
60 C 5 0 523.2511306011972 517.3050950261836 8583 8910 8584 8809 8486 84
61 C# 5 1 554.3652619537442 548.0656567042698 9094 9440 9094 9333 8991 85
62 D 5 2 587.3295358348151 580.655336563965 9634 10001 9635 9888 9525 86
63 D# 5 3 622.2539674441618 615.1828996322964 10207 10596 10208 10476 10092 87
64 E 5 4 659.2551138257398 651.7635784413565 10814 11226 10815 11099 10692 88
65 F 5 5 698.4564628660078 690.5194576061667 11457 11894 11458 11758 11328 89
66 F# 5 6 739.9888454232688 731.5798812707316 12139 12601 12139 12458 12001 90
67 G 5 7 783.9908719634985 775.0818847820951 12860 13350 12861 13198 12715 91
68 G# 5 8 830.6093951598903 821.1706520330732 13625 14144 13626 13983 13471 92
69 A 5 9 880.0 870.0 14435 14985 14436 14815 14272 93
70 A# 5 10 932.3275230361799 921.7328920925869 15294 15876 15294 15696 15120 94
71 B 5 11 987.7666025122483 976.5419820291545 16203 16820 16204 16629 16020 95
72 C 6 0 1046.5022612023945 1034.6101900523672 17167 17820 17167 17618 16972 96
73 C# 6 1 1108.7305239074883 1096.1313134085397 18188 18880 18188 18665 17981 97
74 D 6 2 1174.6590716696303 1161.31067312793 19269 20003 19270 19775 19051 98
75 D# 6 3 1244.5079348883237 1230.3657992645929 20415 21192 20415 20951 20183 99
76 E 6 4 1318.5102276514797 1303.527156882713 21629 22452 21629 22197 21384 100
77 F 6 5 1396.9129257320155 1381.0389152123337 22915 23787 22916 23517 22655 101
78 F# 6 6 1479.9776908465376 1463.1597625414631 24278 25202 24278 24915 24002 102
79 G 6 7 1567.981743926997 1550.1637695641903 25721 26700 25722 26397 25429 103
80 G# 6 8 1661.2187903197805 1642.3413040661467 27251 28288 27251 27966 26942 104
81 A 6 9 1760.0 1740.0 28871 29970 28872 29629 28544 105
82 A# 6 10 1864.6550460723597 1843.4657841851738 30588 31752 30589 31391 30241 106
83 B 6 11 1975.533205024496 1953.0839640583088 32407 33640 32407 33258 32039 107
84 C 7 0 2093.004522404789 2069.2203801047344 34334 35641 34334 35236 33944 108
85 C# 7 1 2217.4610478149766 2192.2626268170793 36376 37760 36376 37331 35963 109
86 D 7 2 2349.31814333926 2322.6213462558594 38539 40005 38539 39551 38101 110
87 D# 7 3 2489.0158697766474 2460.7315985291857 40830 42384 40831 41902 40367 111
88 E 7 4 2637.02045530296 2607.0543137654263 43258 44904 43259 44394 42767 112
89 F 7 5 2793.825851464031 2762.077830424667 45830 47574 45831 47034 45310 113
90 F# 7 6 2959.955381693075 2926.3195250829262 48556 50403 48556 49831 48004 114
91 G 7 7 3135.9634878539946 3100.327539128381 51443 53401 51444 52794 50859 115
92 G# 7 8 3322.437580639561 3284.682608132293 54502 56576 54503 55933 53883 116
93 A 7 9 3520.0 3480.0 57743 59940 57743 59259 57087 117
94 A# 7 10 3729.3100921447194 3686.9315683703476 61176 63504 61177 62783 60482 118
95 B 7 11 3951.066410048992 3906.1679281166175 64814 67280 64815 66516 64078 119
@mist64

mist64 commented Jan 7, 2021

Copy link
Copy Markdown

Number 71 should read "B" instead of "G".

@matozoid

matozoid commented Jan 7, 2021

Copy link
Copy Markdown
Author

Thanks, fixed!

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment