Use this when you want to know how long to make a loop to create a desired pitch. Also useful if you have a resonant feedback sample delay.
Loop Lengths are measured in number of samples. The Error column shows how much the actual pitch is above or below the target pitch. To Fine Tune your loop, just reverse the sign; for example, if the Error is -10 cents, raise your sampler's Fine Tune parameter by +10 cents.
| Target Pitch | MIDI Note | Target Freq. | Target Period | Loop Length | Actual Pitch | Actual Period | Error |
|---|---|---|---|---|---|---|---|
| (A3 = 440 Hz) | (Note No.) | (Hz) | (msec) | @ 88.2 kHz | (Hz) | (msec) | (Cents) |
| C-1 | 12 | 16.352 | 61.156 | 5394 | 16.352 | 61.156 | 0 |
| C#-1 | 13 | 17.324 | 57.724 | 5091 | 17.325 | 57.721 | 0 |
| D-1 | 14 | 18.354 | 54.484 | 4805 | 18.356 | 54.478 | 0 |
| Eb-1 | 15 | 19.445 | 51.426 | 4536 | 19.444 | 51.429 | 0 |
| E-1 | 16 | 20.602 | 48.540 | 4281 | 20.603 | 48.537 | 0 |
| F-1 | 17 | 21.827 | 45.815 | 4041 | 21.826 | 45.816 | 0 |
| F#-1 | 18 | 23.125 | 43.244 | 3814 | 23.125 | 43.243 | 0 |
| G-1 | 19 | 24.500 | 40.817 | 3600 | 24.500 | 40.816 | 0 |
| Ab-1 | 20 | 25.957 | 38.526 | 3398 | 25.956 | 38.526 | 0 |
| A-1 | 21 | 27.500 | 36.364 | 3207 | 27.502 | 36.361 | 0 |
| Bb-1 | 22 | 29.135 | 34.323 | 3027 | 29.138 | 34.320 | 0 |
| B-1 | 23 | 30.868 | 32.396 | 2857 | 30.872 | 32.392 | 0 |
| C0 | 24 | 32.703 | 30.578 | 2697 | 32.703 | 30.578 | 0 |
| C#0 | 25 | 34.648 | 28.862 | 2546 | 34.643 | 28.866 | 0 |
| D0 | 26 | 36.708 | 27.242 | 2403 | 36.704 | 27.245 | 0 |
| Eb0 | 27 | 38.891 | 25.713 | 2268 | 38.889 | 25.714 | 0 |
| E0 | 28 | 41.203 | 24.270 | 2141 | 41.196 | 24.274 | 0 |
| F0 | 29 | 43.654 | 22.908 | 2020 | 43.663 | 22.902 | 0 |
| F#0 | 30 | 46.249 | 21.622 | 1907 | 46.251 | 21.621 | 0 |
| G0 | 31 | 48.999 | 20.408 | 1800 | 49.000 | 20.408 | 0 |
| Ab0 | 32 | 51.913 | 19.263 | 1699 | 51.913 | 19.263 | 0 |
| A0 | 33 | 55.000 | 18.182 | 1604 | 54.988 | 18.186 | 0 |
| Bb0 | 34 | 58.270 | 17.161 | 1514 | 58.256 | 17.166 | 0 |
| B0 | 35 | 61.735 | 16.198 | 1429 | 61.721 | 16.202 | 0 |
| Target Pitch | MIDI Note | Target Freq. | Target Period | Loop Length | Actual Pitch | Actual Period | Error |
| C1 | 36 | 65.406 | 15.289 | 1348 | 65.430 | 15.283 | 1 |
| C#1 | 37 | 69.296 | 14.431 | 1273 | 69.285 | 14.433 | 0 |
| D1 | 38 | 73.416 | 13.621 | 1201 | 73.439 | 13.617 | 1 |
| Eb1 | 39 | 77.782 | 12.856 | 1134 | 77.778 | 12.857 | 0 |
| E1 | 40 | 82.407 | 12.135 | 1070 | 82.430 | 12.132 | 0 |
| F1 | 41 | 87.307 | 11.454 | 1010 | 87.327 | 11.451 | 0 |
| F#1 | 42 | 92.499 | 10.811 | 954 | 92.453 | 10.816 | -1 |
| G1 | 43 | 97.999 | 10.204 | 900 | 98.000 | 10.204 | 0 |
| Ab1 | 44 | 103.826 | 9.631 | 849 | 103.887 | 9.626 | 1 |
| A1 | 45 | 110.000 | 9.091 | 802 | 109.975 | 9.093 | 0 |
| Bb1 | 46 | 116.541 | 8.581 | 757 | 116.513 | 8.583 | 0 |
| B1 | 47 | 123.471 | 8.099 | 714 | 123.529 | 8.095 | 1 |
| C2 | 48 | 130.813 | 7.645 | 674 | 130.861 | 7.642 | 1 |
| C#2 | 49 | 138.591 | 7.215 | 636 | 138.679 | 7.211 | 1 |
| D2 | 50 | 146.832 | 6.810 | 601 | 146.755 | 6.814 | -1 |
| Eb2 | 51 | 155.563 | 6.428 | 567 | 155.556 | 6.429 | 0 |
| E2 | 52 | 164.814 | 6.067 | 535 | 164.860 | 6.066 | 0 |
| F2 | 53 | 174.614 | 5.727 | 505 | 174.653 | 5.726 | 0 |
| F#2 | 54 | 184.997 | 5.405 | 477 | 184.906 | 5.408 | -1 |
| G2 | 55 | 195.998 | 5.102 | 450 | 196.000 | 5.102 | 0 |
| Ab2 | 56 | 207.652 | 4.816 | 425 | 207.529 | 4.819 | -1 |
| A2 | 57 | 220.000 | 4.545 | 401 | 219.950 | 4.546 | 0 |
| Bb2 | 58 | 233.082 | 4.290 | 378 | 233.333 | 4.286 | 2 |
| B2 | 59 | 246.942 | 4.050 | 357 | 247.059 | 4.048 | 1 |
| Target Pitch | MIDI Note | Target Freq. | Target Period | Loop Length | Actual Pitch | Actual Period | Error |
| C3 | 60 | 261.626 | 3.822 | 337 | 261.721 | 3.821 | 1 |
| C#3 | 61 | 277.183 | 3.608 | 318 | 277.358 | 3.605 | 1 |
| D3 | 62 | 293.665 | 3.405 | 300 | 294.000 | 3.401 | 2 |
| Eb3 | 63 | 311.127 | 3.214 | 283 | 311.661 | 3.209 | 3 |
| E3 | 64 | 329.628 | 3.034 | 268 | 329.104 | 3.039 | -3 |
| F3 | 65 | 349.228 | 2.863 | 253 | 348.617 | 2.868 | -3 |
| F#3 | 66 | 369.994 | 2.703 | 238 | 370.588 | 2.698 | 3 |
| G3 | 67 | 391.995 | 2.551 | 225 | 392.000 | 2.551 | 0 |
| Ab3 | 68 | 415.305 | 2.408 | 212 | 416.038 | 2.404 | 3 |
| A3 | 69 | 440.000 | 2.273 | 200 | 441.000 | 2.268 | 4 |
| Bb3 | 70 | 466.164 | 2.145 | 189 | 466.667 | 2.143 | 2 |
| B3 | 71 | 493.883 | 2.025 | 179 | 492.737 | 2.029 | -4 |
| C4 | 72 | 523.251 | 1.911 | 169 | 521.893 | 1.916 | -4 |
| C#4 | 73 | 554.365 | 1.804 | 159 | 554.717 | 1.803 | 1 |
| D4 | 74 | 587.330 | 1.703 | 150 | 588.000 | 1.701 | 2 |
| Eb4 | 75 | 622.254 | 1.607 | 142 | 621.127 | 1.610 | -3 |
| E4 | 76 | 659.255 | 1.517 | 134 | 658.209 | 1.519 | -3 |
| F4 | 77 | 698.456 | 1.432 | 126 | 700.000 | 1.429 | 4 |
| F#4 | 78 | 739.989 | 1.351 | 119 | 741.176 | 1.349 | 3 |
| G4 | 79 | 783.991 | 1.276 | 113 | 780.531 | 1.281 | -8 |
| Ab4 | 80 | 830.609 | 1.204 | 106 | 832.075 | 1.202 | 3 |
| A4 | 81 | 880.000 | 1.136 | 100 | 882.000 | 1.134 | 4 |
| Bb4 | 82 | 932.328 | 1.073 | 95 | 928.421 | 1.077 | -7 |
| B4 | 83 | 987.767 | 1.012 | 89 | 991.011 | 1.009 | 6 |
| Target Pitch | MIDI Note | Target Freq. | Target Period | Loop Length | Actual Pitch | Actual Period | Error |
| C5 | 84 | 1046.502 | 0.956 | 84 | 1050.000 | 0.952 | 6 |
| C#5 | 85 | 1108.731 | 0.902 | 80 | 1102.500 | 0.907 | -10 |
| D5 | 86 | 1174.659 | 0.851 | 75 | 1176.000 | 0.850 | 2 |
| Eb5 | 87 | 1244.508 | 0.804 | 71 | 1242.254 | 0.805 | -3 |
| E5 | 88 | 1318.510 | 0.758 | 67 | 1316.418 | 0.760 | -3 |
| F5 | 89 | 1396.913 | 0.716 | 63 | 1400.000 | 0.714 | 4 |
| F#5 | 90 | 1479.978 | 0.676 | 60 | 1470.000 | 0.680 | -12 |
| G5 | 91 | 1567.982 | 0.638 | 56 | 1575.000 | 0.635 | 8 |
| Ab5 | 92 | 1661.219 | 0.602 | 53 | 1664.151 | 0.601 | 3 |
| A5 | 93 | 1760.000 | 0.568 | 50 | 1764.000 | 0.567 | 4 |
| Bb5 | 94 | 1864.655 | 0.536 | 47 | 1876.596 | 0.533 | 11 |
| B5 | 95 | 1975.533 | 0.506 | 45 | 1960.000 | 0.510 | -14 |
| C6 | 96 | 2093.005 | 0.478 | 42 | 2100.000 | 0.476 | 6 |
| C#6 | 97 | 2217.461 | 0.451 | 40 | 2205.000 | 0.454 | -10 |
| D6 | 98 | 2349.318 | 0.426 | 38 | 2321.053 | 0.431 | -21 |
| Eb6 | 99 | 2489.016 | 0.402 | 35 | 2520.000 | 0.397 | 21 |
| E6 | 100 | 2637.020 | 0.379 | 33 | 2672.727 | 0.374 | 23 |
| F6 | 101 | 2793.826 | 0.358 | 32 | 2756.250 | 0.363 | -23 |
| F#6 | 102 | 2959.955 | 0.338 | 30 | 2940.000 | 0.340 | -12 |
| G6 | 103 | 3135.963 | 0.319 | 28 | 3150.000 | 0.317 | 8 |
| Ab6 | 104 | 3322.438 | 0.301 | 27 | 3266.667 | 0.306 | -29 |
| A6 | 105 | 3520.000 | 0.284 | 25 | 3528.000 | 0.283 | 4 |
| Bb6 | 106 | 3729.310 | 0.268 | 24 | 3675.000 | 0.272 | -25 |
| B6 | 107 | 3951.066 | 0.253 | 22 | 4009.091 | 0.249 | 25 |
| Target Pitch | MIDI Note | Target Freq. | Target Period | Loop Length | Actual Pitch | Actual Period | Error |
| C7 | 108 | 4186.009 | 0.239 | 21 | 4200.000 | 0.238 | 6 |
| C#7 | 109 | 4434.922 | 0.225 | 20 | 4410.000 | 0.227 | -10 |
| D7 | 110 | 4698.636 | 0.213 | 19 | 4642.105 | 0.215 | -21 |
| Eb7 | 111 | 4978.032 | 0.201 | 18 | 4900.000 | 0.204 | -27 |
| E7 | 112 | 5274.041 | 0.190 | 17 | 5188.235 | 0.193 | -28 |
| F7 | 113 | 5587.652 | 0.179 | 16 | 5512.500 | 0.181 | -23 |
| F#7 | 114 | 5919.911 | 0.169 | 15 | 5880.000 | 0.170 | -12 |
| G7 | 115 | 6271.927 | 0.159 | 14 | 6300.000 | 0.159 | 8 |
| Ab7 | 116 | 6644.875 | 0.150 | 13 | 6784.615 | 0.147 | 36 |
| A7 | 117 | 7040.000 | 0.142 | ||||
| Bb7 | 118 | 7458.620 | 0.134 | 12 | 7350.000 | 0.136 | -25 |
| B7 | 119 | 7902.133 | 0.127 | 11 | 8018.182 | 0.125 | 25 |
| C8 | 120 | 8372.018 | 0.119 | ||||
| C#8 | 121 | 8869.844 | 0.113 | 10 | 8820.000 | 0.113 | -10 |
| D8 | 122 | 9397.273 | 0.106 | ||||
| Eb8 | 123 | 9956.063 | 0.100 | 9 | 9800.000 | 0.102 | -27 |
| E8 | 124 | 10548.082 | 0.095 | ||||
| F8 | 125 | 11175.303 | 0.089 | 8 | 11025.000 | 0.091 | -23 |
| F#8 | 126 | 11839.822 | 0.084 | ||||
| G8 | 127 | 12543.854 | 0.080 | 7 | 12600.000 | 0.079 | 8 |