The table below lists the MIDI notes, numbers and frequency. Ardour uses the middle C = C4 (note 60) convention, meaning that the first (lowest) octave is −1.
Frequency calculations are based on A4 = 440 Hz.
| MIDI number | MIDI (english) Note Name | German Note Name | Neo-Latin Note Name | Octave | Frequency (Hz) Rounded at 10-3 |
| 0 | C | C | Do | -1 | 8.176 |
| 1 | C#/D♭ | C#/D♭ | Do#/Re♭ | -1 | 8.662 |
| 2 | D | D | Re | -1 | 9.177 |
| 3 | D#/E♭ | D#/E♭ | Re#/Mi♭ | -1 | 9.723 |
| 4 | E | E | Mi | -1 | 10.301 |
| 5 | F | F | Fa | -1 | 10.913 |
| 6 | F#/G♭ | F#/G♭ | Fa#/Sol♭ | -1 | 11.562 |
| 7 | G | G | Sol | -1 | 12.250 |
| 8 | G#/A♭ | G#/A♭ | Sol#/La♭ | -1 | 12.978 |
| 9 | A | A | La | -1 | 13.750 |
| 10 | A#/B♭ | A#/B | La#/Si♭ | -1 | 14.568 |
| 11 | B | H | Si | -1 | 15.434 |
| 12 | C | C | Do | 0 | 16.352 |
| 13 | C#/D♭ | C#/D♭ | Do#/Re♭ | 0 | 17.324 |
| 14 | D | D | Re | 0 | 18.354 |
| 15 | D#/E♭ | D#/E♭ | Re#/Mi♭ | 0 | 19.445 |
| 16 | E | E | Mi | 0 | 20.602 |
| 17 | F | F | Fa | 0 | 21.827 |
| 18 | F#/G♭ | F#/G♭ | Fa#/Sol♭ | 0 | 23.125 |
| 19 | G | G | Sol | 0 | 24.500 |
| 20 | G#/A♭ | G#/A♭ | Sol#/La♭ | 0 | 25.957 |
| 21 | A | A | La | 0 | 27.500 |
| 22 | A#/B♭ | A#/B | La#/Si♭ | 0 | 29.135 |
| 23 | B | H | Si | 0 | 30.868 |
| 24 | C | C | Do | 1 | 32.703 |
| 25 | C#/D♭ | C#/D♭ | Do#/Re♭ | 1 | 34.648 |
| 26 | D | D | Re | 1 | 36.708 |
| 27 | D#/E♭ | D#/E♭ | Re#/Mi♭ | 1 | 38.891 |
| 28 | E | E | Mi | 1 | 41.203 |
| 29 | F | F | Fa | 1 | 43.654 |
| 30 | F#/G♭ | F#/G♭ | Fa#/Sol♭ | 1 | 46.249 |
| 31 | G | G | Sol | 1 | 48.999 |
| 32 | G#/A♭ | G#/A♭ | Sol#/La♭ | 1 | 51.913 |
| 33 | A | A | La | 1 | 55.000 |
| 34 | A#/B♭ | A#/B | La#/Si♭ | 1 | 58.270 |
| 35 | B | H | Si | 1 | 61.735 |
| 36 | C | C | Do | 2 | 65.406 |
| 37 | C#/D♭ | C#/D♭ | Do#/Re♭ | 2 | 69.296 |
| 38 | D | D | Re | 2 | 73.416 |
| 39 | D#/E♭ | D#/E♭ | Re#/Mi♭ | 2 | 77.782 |
| 40 | E | E | Mi | 2 | 82.407 |
| 41 | F | F | Fa | 2 | 87.307 |
| 42 | F#/G♭ | F#/G♭ | Fa#/Sol♭ | 2 | 92.499 |
| 43 | G | G | Sol | 2 | 97.999 |
| 44 | G#/A♭ | G#/A♭ | Sol#/La♭ | 2 | 103.826 |
| 45 | A | A | La | 2 | 110.000 |
| 46 | A#/B♭ | A#/B | La#/Si♭ | 2 | 116.541 |
| 47 | B | H | Si | 2 | 123.471 |
| 48 | C | C | Do | 3 | 130.813 |
| 49 | C#/D♭ | C#/D♭ | Do#/Re♭ | 3 | 138.591 |
| 50 | D | D | Re | 3 | 146.832 |
| 51 | D#/E♭ | D#/E♭ | Re#/Mi♭ | 3 | 155.563 |
| 52 | E | E | Mi | 3 | 164.814 |
| 53 | F | F | Fa | 3 | 174.614 |
| 54 | F#/G♭ | F#/G♭ | Fa#/Sol♭ | 3 | 184.997 |
| 55 | G | G | Sol | 3 | 195.998 |
| 56 | G#/A♭ | G#/A♭ | Sol#/La♭ | 3 | 207.652 |
| 57 | A | A | La | 3 | 220.000 |
| 58 | A#/B♭ | A#/B | La#/Si♭ | 3 | 233.082 |
| 59 | B | H | Si | 3 | 246.942 |
| 60 | C | C | Do | 4 | 261.626 |
| 61 | C#/D♭ | C#/D♭ | Do#/Re♭ | 4 | 277.183 |
| 62 | D | D | Re | 4 | 293.665 |
| 63 | D#/E♭ | D#/E♭ | Re#/Mi♭ | 4 | 311.127 |
| 64 | E | E | Mi | 4 | 329.628 |
| 65 | F | F | Fa | 4 | 349.228 |
| 66 | F#/G♭ | F#/G♭ | Fa#/Sol♭ | 4 | 369.994 |
| 67 | G | G | Sol | 4 | 391.995 |
| 68 | G#/A♭ | G#/A♭ | Sol#/La♭ | 4 | 415.305 |
| 69 | A | A | La | 4 | 440.000 |
| 70 | A#/B♭ | A#/B | La#/Si♭ | 4 | 466.164 |
| 71 | B | H | Si | 4 | 493.883 |
| 72 | C | C | Do | 5 | 523.251 |
| 73 | C#/D♭ | C#/D♭ | Do#/Re♭ | 5 | 554.365 |
| 74 | D | D | Re | 5 | 587.330 |
| 75 | D#/E♭ | D#/E♭ | Re#/Mi♭ | 5 | 622.254 |
| 76 | E | E | Mi | 5 | 659.255 |
| 77 | F | F | Fa | 5 | 698.456 |
| 78 | F#/G♭ | F#/G♭ | Fa#/Sol♭ | 5 | 739.989 |
| 79 | G | G | Sol | 5 | 783.991 |
| 80 | G#/A♭ | G#/A♭ | Sol#/La♭ | 5 | 830.609 |
| 81 | A | A | La | 5 | 880.000 |
| 82 | A#/B♭ | A#/B | La#/Si♭ | 5 | 932.328 |
| 83 | B | H | Si | 5 | 987.767 |
| 84 | C | C | Do | 6 | 1 046.502 |
| 85 | C#/D♭ | C#/D♭ | Do#/Re♭ | 6 | 1 108.731 |
| 86 | D | D | Re | 6 | 1 174.659 |
| 87 | D#/E♭ | D#/E♭ | Re#/Mi♭ | 6 | 1 244.508 |
| 88 | E | E | Mi | 6 | 1 318.510 |
| 89 | F | F | Fa | 6 | 1 396.913 |
| 90 | F#/G♭ | F#/G♭ | Fa#/Sol♭ | 6 | 1 479.978 |
| 91 | G | G | Sol | 6 | 1 567.982 |
| 92 | G#/A♭ | G#/A♭ | Sol#/La♭ | 6 | 1 661.219 |
| 93 | A | A | La | 6 | 1 760.000 |
| 94 | A#/B♭ | A#/B | La#/Si♭ | 6 | 1 864.655 |
| 95 | B | H | Si | 6 | 1 975.533 |
| 96 | C | C | Do | 7 | 2 093.005 |
| 97 | C#/D♭ | C#/D♭ | Do#/Re♭ | 7 | 2 217.461 |
| 98 | D | D | Re | 7 | 2 349.318 |
| 99 | D#/E♭ | D#/E♭ | Re#/Mi♭ | 7 | 2 489.016 |
| 100 | E | E | Mi | 7 | 2 637.020 |
| 101 | F | F | Fa | 7 | 2 793.826 |
| 102 | F#/G♭ | F#/G♭ | Fa#/Sol♭ | 7 | 2 959.955 |
| 103 | G | G | Sol | 7 | 3 135.963 |
| 104 | G#/A♭ | G#/A♭ | Sol#/La♭ | 7 | 3 322.438 |
| 105 | A | A | La | 7 | 3 520.000 |
| 106 | A#/B♭ | A#/B | La#/Si♭ | 7 | 3 729.310 |
| 107 | B | H | Si | 7 | 3 951.066 |
| 108 | C | C | Do | 8 | 4 186.009 |
| 109 | C#/D♭ | C#/D♭ | Do#/Re♭ | 8 | 4 434.922 |
| 110 | D | D | Re | 8 | 4 698.636 |
| 111 | D#/E♭ | D#/E♭ | Re#/Mi♭ | 8 | 4 978.032 |
| 112 | E | E | Mi | 8 | 5 274.041 |
| 113 | F | F | Fa | 8 | 5 587.652 |
| 114 | F#/G♭ | F#/G♭ | Fa#/Sol♭ | 8 | 5 919.911 |
| 115 | G | G | Sol | 8 | 6 271.927 |
| 116 | G#/A♭ | G#/A♭ | Sol#/La♭ | 8 | 6 644.875 |
| 117 | A | A | La | 8 | 7 040.000 |
| 118 | A#/B♭ | A#/B | La#/Si♭ | 8 | 7 458.620 |
| 119 | B | H | Si | 8 | 7 902.133 |
| 120 | C | C | Do | 9 | 8 372.018 |
| 121 | C#/D♭ | C#/D♭ | Do#/Re♭ | 9 | 8 869.844 |
| 122 | D | D | Re | 9 | 9 397.273 |
| 123 | D#/E♭ | D#/E♭ | Re#/Mi♭ | 9 | 9 956.063 |
| 124 | E | E | Mi | 9 | 10 548.082 |
| 125 | F | F | Fa | 9 | 11 175.303 |
| 126 | F#/G♭ | F#/G♭ | Fa#/Sol♭ | 9 | 11 839.822 |
| 127 | G | G | Sol | 9 | 12 543.854 |