{"id":162,"date":"2026-01-11T03:53:46","date_gmt":"2026-01-11T03:53:46","guid":{"rendered":"https:\/\/ministryoftunes.com\/121-learning\/?p=162"},"modified":"2026-04-30T21:37:46","modified_gmt":"2026-04-30T21:37:46","slug":"midi-note-number-pitch-name-and-the-corresponding-frequency","status":"publish","type":"post","link":"https:\/\/ministryoftunes.com\/121-learning\/midi-note-number-pitch-name-and-the-corresponding-frequency\/","title":{"rendered":"MIDI note number, pitch name, and the corresponding frequency"},"content":{"rendered":"<p>The following table summarizes the MIDI note numbers as defined in the MIDI standard and matched to the Middle C (note number 60) as C4.<\/p>\n<h2><strong>What is the formula for note frequency?<\/strong><\/h2>\n<p>$Freq = note  \\times 2 N\/12$<\/p>\n<p>where N is the number of notes away from the start in connecting the MIDI note number and the base frequency &#8211; assuming equal tuning based on <\/p>\n<p>$A4=a&#8217;=440 Hz$ &#8211; is:<\/p>\n<p>$f = 440 \\cdot 2^{\\left(\\right. n &#8211; 69 \\left.\\right) \/ 12}$<\/p>\n<p>Formula Breakdown<\/p>\n<ul>\n<li><strong><code>f<\/code><\/strong>: The frequency (in Hertz, Hz) of the note you want to find.<\/li>\n<li><strong><code>f\u2080<\/code><\/strong>: The frequency of your known reference note (e.g., A4 = 440 Hz).<\/li>\n<li><strong><code>n<\/code><\/strong>: The number of semitones (half steps) the target note is\u00a0<em>above<\/em>\u00a0(positive) or\u00a0<em>below<\/em>\u00a0(negative) the reference note.<\/li>\n<li><strong><code>2^(n\/12)<\/code><\/strong>: This part calculates the ratio. Going up 12 semitones (an octave) gives you\u00a0<code>2^(12\/12) = 2<\/code>, doubling the frequency.\u00a0<\/li>\n<\/ul>\n<p>Example: Finding the frequency of A#4 (A sharp in the 4th octave)<\/p>\n<ol>\n<li><strong>Reference<\/strong>: A4 = 440 Hz (<code>f\u2080<\/code>).<\/li>\n<li><strong>Distance<\/strong>: A#4 is 1 semitone above A4, so\u00a0<code>n = 1<\/code>.<\/li>\n<li><strong>Calculation<\/strong>:\u00a0<code>f = 440 Hz * (2^(1\/12))<\/code>\u00a0\u2248 466.16 Hz.\u00a0<\/li>\n<\/ol>\n<p>Example: Finding the frequency of C5 (Middle C an octave up)<\/p>\n<ol>\n<li><strong>Reference<\/strong>: A4 = 440 Hz (<code>f\u2080<\/code>).<\/li>\n<li><strong>Distance<\/strong>: C5 is 3 semitones above A4 (A4 -&gt; A#4 -&gt; B4 -&gt; C5), so\u00a0<code>n = 3<\/code>.<\/li>\n<li><strong>Calculation<\/strong>:\u00a0<code>f = 440 Hz * (2^(3\/12))<\/code>\u00a0\u2248 523.25 Hz.<\/li>\n<\/ol>\n<table>\n<thead>\n<tr>\n<th><strong>MIDI note number<\/strong><\/th>\n<th><strong>Key number (Organ)<\/strong><\/th>\n<th><strong>Key number (Piano)<\/strong><\/th>\n<th><strong>Note names (English)<\/strong><\/th>\n<th><\/th>\n<th><strong>Frequency (Equal tuning at 440 Hz)<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><em>top of MIDI tuning range<\/em><\/td>\n<td><\/td>\n<td><\/td>\n<td>G#9\/Ab9<\/td>\n<td><\/td>\n<td>13289.75<\/td>\n<\/tr>\n<tr>\n<td>127<\/td>\n<td><\/td>\n<td><\/td>\n<td>G9<\/td>\n<td><\/td>\n<td>12543.85<\/td>\n<\/tr>\n<tr>\n<td>126<\/td>\n<td><\/td>\n<td><\/td>\n<td>F#9\/Gb9<\/td>\n<td><\/td>\n<td>11839.82<\/td>\n<\/tr>\n<tr>\n<td>125<\/td>\n<td><\/td>\n<td><\/td>\n<td>F9<\/td>\n<td><\/td>\n<td>11175.30<\/td>\n<\/tr>\n<tr>\n<td>124<\/td>\n<td><\/td>\n<td><\/td>\n<td>E9<\/td>\n<td><\/td>\n<td>10548.08<\/td>\n<\/tr>\n<tr>\n<td>123<\/td>\n<td><\/td>\n<td><\/td>\n<td>D#9\/Eb9<\/td>\n<td><\/td>\n<td>9956.06<\/td>\n<\/tr>\n<tr>\n<td>122<\/td>\n<td><\/td>\n<td><\/td>\n<td>D9<\/td>\n<td><\/td>\n<td>9397.27<\/td>\n<\/tr>\n<tr>\n<td>121<\/td>\n<td><\/td>\n<td><\/td>\n<td>C#9\/Db9<\/td>\n<td><\/td>\n<td>8869.84<\/td>\n<\/tr>\n<tr>\n<td>120<\/td>\n<td><\/td>\n<td><\/td>\n<td>C9<\/td>\n<td><\/td>\n<td>8372.02<\/td>\n<\/tr>\n<tr>\n<td>119<\/td>\n<td><\/td>\n<td><\/td>\n<td>B8<\/td>\n<td><\/td>\n<td>7902.13<\/td>\n<\/tr>\n<tr>\n<td>118<\/td>\n<td><\/td>\n<td><\/td>\n<td>A#8\/Bb8<\/td>\n<td><\/td>\n<td>7458.62<\/td>\n<\/tr>\n<tr>\n<td>117<\/td>\n<td><\/td>\n<td><\/td>\n<td>A8<\/td>\n<td><\/td>\n<td>7040.00<\/td>\n<\/tr>\n<tr>\n<td>116<\/td>\n<td><\/td>\n<td><\/td>\n<td>G#8\/Ab8<\/td>\n<td><\/td>\n<td>6644.88<\/td>\n<\/tr>\n<tr>\n<td>115<\/td>\n<td><\/td>\n<td><\/td>\n<td>G8<\/td>\n<td><\/td>\n<td>6271.93<\/td>\n<\/tr>\n<tr>\n<td>114<\/td>\n<td><\/td>\n<td><\/td>\n<td>F#8\/Gb8<\/td>\n<td><\/td>\n<td>5919.91<\/td>\n<\/tr>\n<tr>\n<td>113<\/td>\n<td><\/td>\n<td><\/td>\n<td>F8<\/td>\n<td><\/td>\n<td>5587.65<\/td>\n<\/tr>\n<tr>\n<td>112<\/td>\n<td><\/td>\n<td><\/td>\n<td>E8<\/td>\n<td><\/td>\n<td>5274.04<\/td>\n<\/tr>\n<tr>\n<td>111<\/td>\n<td><\/td>\n<td><\/td>\n<td>D#8\/Eb8<\/td>\n<td><\/td>\n<td>4978.03<\/td>\n<\/tr>\n<tr>\n<td>110<\/td>\n<td><\/td>\n<td><\/td>\n<td>D8<\/td>\n<td><\/td>\n<td>4698.64<\/td>\n<\/tr>\n<tr>\n<td>109<\/td>\n<td><\/td>\n<td><\/td>\n<td>C#8\/Db8<\/td>\n<td><\/td>\n<td>4434.92<\/td>\n<\/tr>\n<tr>\n<td>108<\/td>\n<td><\/td>\n<td>88<\/td>\n<td>C8<\/td>\n<td><\/td>\n<td>4186.01<\/td>\n<\/tr>\n<tr>\n<td>107<\/td>\n<td><\/td>\n<td>87<\/td>\n<td>B7<\/td>\n<td><\/td>\n<td>3951.07<\/td>\n<\/tr>\n<tr>\n<td>106<\/td>\n<td><\/td>\n<td>86<\/td>\n<td>A#7\/Bb7<\/td>\n<td><\/td>\n<td>3729.31<\/td>\n<\/tr>\n<tr>\n<td>105<\/td>\n<td><\/td>\n<td>85<\/td>\n<td>A7<\/td>\n<td><\/td>\n<td>3520.00<\/td>\n<\/tr>\n<tr>\n<td>104<\/td>\n<td><\/td>\n<td>84<\/td>\n<td>G#7\/Ab7<\/td>\n<td><\/td>\n<td>3322.44<\/td>\n<\/tr>\n<tr>\n<td>103<\/td>\n<td><\/td>\n<td>83<\/td>\n<td>G7<\/td>\n<td><\/td>\n<td>3135.96<\/td>\n<\/tr>\n<tr>\n<td>102<\/td>\n<td><\/td>\n<td>82<\/td>\n<td>F#7\/Gb7<\/td>\n<td><\/td>\n<td>2959.96<\/td>\n<\/tr>\n<tr>\n<td>101<\/td>\n<td><\/td>\n<td>81<\/td>\n<td>F7<\/td>\n<td><\/td>\n<td>2793.83<\/td>\n<\/tr>\n<tr>\n<td>100<\/td>\n<td><\/td>\n<td>80<\/td>\n<td>E7<\/td>\n<td><\/td>\n<td>2637.02<\/td>\n<\/tr>\n<tr>\n<td>99<\/td>\n<td><\/td>\n<td>79<\/td>\n<td>D#7\/Eb7<\/td>\n<td><\/td>\n<td>2489.02<\/td>\n<\/tr>\n<tr>\n<td>98<\/td>\n<td><\/td>\n<td>78<\/td>\n<td>D7<\/td>\n<td><\/td>\n<td>2349.32<\/td>\n<\/tr>\n<tr>\n<td>97<\/td>\n<td><\/td>\n<td>77<\/td>\n<td>C#7\/Db7<\/td>\n<td><\/td>\n<td>2217.46<\/td>\n<\/tr>\n<tr>\n<td>96<\/td>\n<td>61<\/td>\n<td>76<\/td>\n<td>C7<\/td>\n<td><\/td>\n<td>2093.00<\/td>\n<\/tr>\n<tr>\n<td>95<\/td>\n<td>60<\/td>\n<td>75<\/td>\n<td>B6<\/td>\n<td><\/td>\n<td>1975.53<\/td>\n<\/tr>\n<tr>\n<td>94<\/td>\n<td>59<\/td>\n<td>74<\/td>\n<td>A#6\/Bb6<\/td>\n<td><\/td>\n<td>1864.66<\/td>\n<\/tr>\n<tr>\n<td>93<\/td>\n<td>58<\/td>\n<td>73<\/td>\n<td>A6<\/td>\n<td><\/td>\n<td>1760.00<\/td>\n<\/tr>\n<tr>\n<td>92<\/td>\n<td>57<\/td>\n<td>72<\/td>\n<td>G#6\/Ab6<\/td>\n<td><\/td>\n<td>1661.22<\/td>\n<\/tr>\n<tr>\n<td>91<\/td>\n<td>56<\/td>\n<td>71<\/td>\n<td>G6<\/td>\n<td><\/td>\n<td>1567.98<\/td>\n<\/tr>\n<tr>\n<td>90<\/td>\n<td>55<\/td>\n<td>70<\/td>\n<td>F#6\/Gb6<\/td>\n<td><\/td>\n<td>1479.98<\/td>\n<\/tr>\n<tr>\n<td>89<\/td>\n<td>54<\/td>\n<td>69<\/td>\n<td>F6<\/td>\n<td><\/td>\n<td>1396.91<\/td>\n<\/tr>\n<tr>\n<td>88<\/td>\n<td>53<\/td>\n<td>68<\/td>\n<td>E6<\/td>\n<td><\/td>\n<td>1318.51<\/td>\n<\/tr>\n<tr>\n<td>87<\/td>\n<td>52<\/td>\n<td>67<\/td>\n<td>D#6\/Eb6<\/td>\n<td><\/td>\n<td>1244.51<\/td>\n<\/tr>\n<tr>\n<td>86<\/td>\n<td>51<\/td>\n<td>66<\/td>\n<td>D6<\/td>\n<td><\/td>\n<td>1174.66<\/td>\n<\/tr>\n<tr>\n<td>85<\/td>\n<td>50<\/td>\n<td>65<\/td>\n<td>C#6\/Db6<\/td>\n<td><\/td>\n<td>1108.73<\/td>\n<\/tr>\n<tr>\n<td>84<\/td>\n<td>49<\/td>\n<td>64<\/td>\n<td>C6<\/td>\n<td><\/td>\n<td>1046.50<\/td>\n<\/tr>\n<tr>\n<td>83<\/td>\n<td>48<\/td>\n<td>63<\/td>\n<td>B5<\/td>\n<td><\/td>\n<td>987.77<\/td>\n<\/tr>\n<tr>\n<td>82<\/td>\n<td>47<\/td>\n<td>62<\/td>\n<td>A#5\/Bb5<\/td>\n<td><\/td>\n<td>932.33<\/td>\n<\/tr>\n<tr>\n<td>81<\/td>\n<td>46<\/td>\n<td>61<\/td>\n<td>A5<\/td>\n<td><\/td>\n<td>880.00<\/td>\n<\/tr>\n<tr>\n<td>80<\/td>\n<td>45<\/td>\n<td>60<\/td>\n<td>G#5\/Ab5<\/td>\n<td><\/td>\n<td>830.61<\/td>\n<\/tr>\n<tr>\n<td>79<\/td>\n<td>44<\/td>\n<td>59<\/td>\n<td>G5<\/td>\n<td><\/td>\n<td>783.99<\/td>\n<\/tr>\n<tr>\n<td>78<\/td>\n<td>43<\/td>\n<td>58<\/td>\n<td>F#5\/Gb5<\/td>\n<td><\/td>\n<td>739.99<\/td>\n<\/tr>\n<tr>\n<td>77<\/td>\n<td>42<\/td>\n<td>57<\/td>\n<td>F5<\/td>\n<td><\/td>\n<td>698.46<\/td>\n<\/tr>\n<tr>\n<td>76<\/td>\n<td>41<\/td>\n<td>56<\/td>\n<td>E5<\/td>\n<td><\/td>\n<td>659.26<\/td>\n<\/tr>\n<tr>\n<td>75<\/td>\n<td>40<\/td>\n<td>55<\/td>\n<td>D#5\/Eb5<\/td>\n<td><\/td>\n<td>622.25<\/td>\n<\/tr>\n<tr>\n<td>74<\/td>\n<td>39<\/td>\n<td>54<\/td>\n<td>D5<\/td>\n<td><\/td>\n<td>587.33<\/td>\n<\/tr>\n<tr>\n<td>73<\/td>\n<td>38<\/td>\n<td>53<\/td>\n<td>C#5\/Db5<\/td>\n<td><\/td>\n<td>554.37<\/td>\n<\/tr>\n<tr>\n<td>72<\/td>\n<td>37<\/td>\n<td>52<\/td>\n<td>C5<\/td>\n<td><\/td>\n<td>523.25<\/td>\n<\/tr>\n<tr>\n<td>71<\/td>\n<td>36<\/td>\n<td>51<\/td>\n<td>B4<\/td>\n<td><\/td>\n<td>493.88<\/td>\n<\/tr>\n<tr>\n<td>70<\/td>\n<td>35<\/td>\n<td>50<\/td>\n<td>A#4\/Bb4<\/td>\n<td><\/td>\n<td>466.16<\/td>\n<\/tr>\n<tr>\n<td>69<\/td>\n<td>34<\/td>\n<td>49<\/td>\n<td>A4 concert pitch<\/td>\n<td><\/td>\n<td>440.00<\/td>\n<\/tr>\n<tr>\n<td>68<\/td>\n<td>33<\/td>\n<td>48<\/td>\n<td>G#4\/Ab4<\/td>\n<td><\/td>\n<td>415.30<\/td>\n<\/tr>\n<tr>\n<td>67<\/td>\n<td>32<\/td>\n<td>47<\/td>\n<td>G4<\/td>\n<td><\/td>\n<td>392.00<\/td>\n<\/tr>\n<tr>\n<td>66<\/td>\n<td>31<\/td>\n<td>46<\/td>\n<td>F#4\/Gb4<\/td>\n<td><\/td>\n<td>369.99<\/td>\n<\/tr>\n<tr>\n<td>65<\/td>\n<td>30<\/td>\n<td>45<\/td>\n<td>F4<\/td>\n<td><\/td>\n<td>349.23<\/td>\n<\/tr>\n<tr>\n<td>64<\/td>\n<td>29<\/td>\n<td>44<\/td>\n<td>E4<\/td>\n<td><\/td>\n<td>329.63<\/td>\n<\/tr>\n<tr>\n<td>63<\/td>\n<td>28<\/td>\n<td>43<\/td>\n<td>D#4\/Eb4<\/td>\n<td><\/td>\n<td>311.13<\/td>\n<\/tr>\n<tr>\n<td>62<\/td>\n<td>27<\/td>\n<td>42<\/td>\n<td>D4<\/td>\n<td><\/td>\n<td>293.66<\/td>\n<\/tr>\n<tr>\n<td>61<\/td>\n<td>26<\/td>\n<td>41<\/td>\n<td>C#4\/Db4<\/td>\n<td><\/td>\n<td>277.18<\/td>\n<\/tr>\n<tr>\n<td>60<\/td>\n<td>25<\/td>\n<td>40<\/td>\n<td>C4 (middle C)<\/td>\n<td><\/td>\n<td>261.63<\/td>\n<\/tr>\n<tr>\n<td>59<\/td>\n<td>24<\/td>\n<td>39<\/td>\n<td>B3<\/td>\n<td><\/td>\n<td>246.94<\/td>\n<\/tr>\n<tr>\n<td>58<\/td>\n<td>23<\/td>\n<td>38<\/td>\n<td>A#3\/Bb3<\/td>\n<td><\/td>\n<td>233.08<\/td>\n<\/tr>\n<tr>\n<td>57<\/td>\n<td>22<\/td>\n<td>37<\/td>\n<td>A3<\/td>\n<td><\/td>\n<td>220.00<\/td>\n<\/tr>\n<tr>\n<td>56<\/td>\n<td>21<\/td>\n<td>36<\/td>\n<td>G#3\/Ab3<\/td>\n<td><\/td>\n<td>207.65<\/td>\n<\/tr>\n<tr>\n<td>55<\/td>\n<td>20<\/td>\n<td>35<\/td>\n<td>G3<\/td>\n<td><\/td>\n<td>196.00<\/td>\n<\/tr>\n<tr>\n<td>54<\/td>\n<td>19<\/td>\n<td>34<\/td>\n<td>F#3\/Gb3<\/td>\n<td><\/td>\n<td>185.00<\/td>\n<\/tr>\n<tr>\n<td>53<\/td>\n<td>18<\/td>\n<td>33<\/td>\n<td>F3<\/td>\n<td><\/td>\n<td>174.61<\/td>\n<\/tr>\n<tr>\n<td>52<\/td>\n<td>17<\/td>\n<td>32<\/td>\n<td>E3<\/td>\n<td><\/td>\n<td>164.81<\/td>\n<\/tr>\n<tr>\n<td>51<\/td>\n<td>16<\/td>\n<td>31<\/td>\n<td>D#3\/Eb3<\/td>\n<td><\/td>\n<td>155.56<\/td>\n<\/tr>\n<tr>\n<td>50<\/td>\n<td>15<\/td>\n<td>30<\/td>\n<td>D3<\/td>\n<td><\/td>\n<td>146.83<\/td>\n<\/tr>\n<tr>\n<td>49<\/td>\n<td>14<\/td>\n<td>29<\/td>\n<td>C#3\/Db3<\/td>\n<td><\/td>\n<td>138.59<\/td>\n<\/tr>\n<tr>\n<td>48<\/td>\n<td>13<\/td>\n<td>28<\/td>\n<td>C3<\/td>\n<td><\/td>\n<td>130.81<\/td>\n<\/tr>\n<tr>\n<td>47<\/td>\n<td>12<\/td>\n<td>27<\/td>\n<td>B2<\/td>\n<td><\/td>\n<td>123.47<\/td>\n<\/tr>\n<tr>\n<td>46<\/td>\n<td>11<\/td>\n<td>26<\/td>\n<td>A#2\/Bb2<\/td>\n<td><\/td>\n<td>116.54<\/td>\n<\/tr>\n<tr>\n<td>45<\/td>\n<td>10<\/td>\n<td>25<\/td>\n<td>A2<\/td>\n<td><\/td>\n<td>110.00<\/td>\n<\/tr>\n<tr>\n<td>44<\/td>\n<td>9<\/td>\n<td>24<\/td>\n<td>G#2\/Ab2<\/td>\n<td><\/td>\n<td>103.83<\/td>\n<\/tr>\n<tr>\n<td>43<\/td>\n<td>8<\/td>\n<td>23<\/td>\n<td>G2<\/td>\n<td><\/td>\n<td>98.00<\/td>\n<\/tr>\n<tr>\n<td>42<\/td>\n<td>7<\/td>\n<td>22<\/td>\n<td>F#2\/Gb2<\/td>\n<td><\/td>\n<td>92.50<\/td>\n<\/tr>\n<tr>\n<td>41<\/td>\n<td>6<\/td>\n<td>21<\/td>\n<td>F2<\/td>\n<td><\/td>\n<td>87.31<\/td>\n<\/tr>\n<tr>\n<td>40<\/td>\n<td>5<\/td>\n<td>20<\/td>\n<td>E2<\/td>\n<td><\/td>\n<td>82.41<\/td>\n<\/tr>\n<tr>\n<td>39<\/td>\n<td>4<\/td>\n<td>19<\/td>\n<td>D#2\/Eb2<\/td>\n<td><\/td>\n<td>77.78<\/td>\n<\/tr>\n<tr>\n<td>38<\/td>\n<td>3<\/td>\n<td>18<\/td>\n<td>D2<\/td>\n<td><\/td>\n<td>73.42<\/td>\n<\/tr>\n<tr>\n<td>37<\/td>\n<td>2<\/td>\n<td>17<\/td>\n<td>C#2\/Db2<\/td>\n<td><\/td>\n<td>69.30<\/td>\n<\/tr>\n<tr>\n<td>36<\/td>\n<td>1<\/td>\n<td>16<\/td>\n<td>C2<\/td>\n<td><\/td>\n<td>65.41<\/td>\n<\/tr>\n<tr>\n<td>35<\/td>\n<td><\/td>\n<td>15<\/td>\n<td>B1<\/td>\n<td><\/td>\n<td>61.74<\/td>\n<\/tr>\n<tr>\n<td>34<\/td>\n<td><\/td>\n<td>14<\/td>\n<td>A#1\/Bb1<\/td>\n<td><\/td>\n<td>58.27<\/td>\n<\/tr>\n<tr>\n<td>33<\/td>\n<td><\/td>\n<td>13<\/td>\n<td>A1<\/td>\n<td><\/td>\n<td>55.00<\/td>\n<\/tr>\n<tr>\n<td>32<\/td>\n<td><\/td>\n<td>12<\/td>\n<td>G#1\/Ab1<\/td>\n<td><\/td>\n<td>51.91<\/td>\n<\/tr>\n<tr>\n<td>31<\/td>\n<td><\/td>\n<td>11<\/td>\n<td>G1<\/td>\n<td><\/td>\n<td>49.00<\/td>\n<\/tr>\n<tr>\n<td>30<\/td>\n<td><\/td>\n<td>10<\/td>\n<td>F#1\/Gb1<\/td>\n<td><\/td>\n<td>46.25<\/td>\n<\/tr>\n<tr>\n<td>29<\/td>\n<td><\/td>\n<td>9<\/td>\n<td>F1<\/td>\n<td><\/td>\n<td>43.65<\/td>\n<\/tr>\n<tr>\n<td>28<\/td>\n<td><\/td>\n<td>8<\/td>\n<td>E1<\/td>\n<td><\/td>\n<td>41.20<\/td>\n<\/tr>\n<tr>\n<td>27<\/td>\n<td><\/td>\n<td>7<\/td>\n<td>D#1\/Eb1<\/td>\n<td><\/td>\n<td>38.89<\/td>\n<\/tr>\n<tr>\n<td>26<\/td>\n<td><\/td>\n<td>6<\/td>\n<td>D1<\/td>\n<td><\/td>\n<td>36.71<\/td>\n<\/tr>\n<tr>\n<td>25<\/td>\n<td><\/td>\n<td>5<\/td>\n<td>C#1\/Db1<\/td>\n<td><\/td>\n<td>34.65<\/td>\n<\/tr>\n<tr>\n<td>24<\/td>\n<td><\/td>\n<td>4<\/td>\n<td>C1<\/td>\n<td><\/td>\n<td>32.70<\/td>\n<\/tr>\n<tr>\n<td>23<\/td>\n<td><\/td>\n<td>3<\/td>\n<td>B0<\/td>\n<td><\/td>\n<td>30.87<\/td>\n<\/tr>\n<tr>\n<td>22<\/td>\n<td><\/td>\n<td>2<\/td>\n<td>A#0\/Bb0<\/td>\n<td><\/td>\n<td>29.14<\/td>\n<\/tr>\n<tr>\n<td>21<\/td>\n<td><\/td>\n<td>1<\/td>\n<td>A0<\/td>\n<td><\/td>\n<td>27.50<\/td>\n<\/tr>\n<tr>\n<td>20<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>25.96<\/td>\n<\/tr>\n<tr>\n<td>19<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>24.50<\/td>\n<\/tr>\n<tr>\n<td>18<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>23.12<\/td>\n<\/tr>\n<tr>\n<td>17<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>21.83<\/td>\n<\/tr>\n<tr>\n<td>16<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>20.60<\/td>\n<\/tr>\n<tr>\n<td>15<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>19.45<\/td>\n<\/tr>\n<tr>\n<td>14<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>18.35<\/td>\n<\/tr>\n<tr>\n<td>13<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>17.32<\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>16.35<\/td>\n<\/tr>\n<tr>\n<td>11<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>15.43<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>14.57<\/td>\n<\/tr>\n<tr>\n<td>9<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>13.75<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>12.98<\/td>\n<\/tr>\n<tr>\n<td>7<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>12.25<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>11.56<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>10.91<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>10.30<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>9.72<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>9.18<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>8.66<\/td>\n<\/tr>\n<tr>\n<td>0<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>8.18<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Note that some manufacturers label middle C as C3.<\/p>","protected":false},"excerpt":{"rendered":"<p>The following table summarizes the MIDI note numbers as defined in the MIDI standard and matched to the Middle C (note number 60) as C4. What is the formula for note frequency? $Freq = note&hellip;<\/p>","protected":false},"author":1,"featured_media":144,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pagelayer_contact_templates":[],"_pagelayer_content":"","_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","dsgo_overlay_header":false,"dsgo_overlay_header_text_color":"","dsgo_overlay_skip_top_bar":false,"_designsetgo_exclude_llms":false,"footnotes":""},"categories":[11,2],"tags":[40,8,39],"class_list":["post-162","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-midi","category-music-technology","tag-frequency","tag-midi","tag-pitch"],"_links":{"self":[{"href":"https:\/\/ministryoftunes.com\/121-learning\/wp-json\/wp\/v2\/posts\/162","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ministryoftunes.com\/121-learning\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ministryoftunes.com\/121-learning\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ministryoftunes.com\/121-learning\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ministryoftunes.com\/121-learning\/wp-json\/wp\/v2\/comments?post=162"}],"version-history":[{"count":0,"href":"https:\/\/ministryoftunes.com\/121-learning\/wp-json\/wp\/v2\/posts\/162\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ministryoftunes.com\/121-learning\/wp-json\/wp\/v2\/media\/144"}],"wp:attachment":[{"href":"https:\/\/ministryoftunes.com\/121-learning\/wp-json\/wp\/v2\/media?parent=162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ministryoftunes.com\/121-learning\/wp-json\/wp\/v2\/categories?post=162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ministryoftunes.com\/121-learning\/wp-json\/wp\/v2\/tags?post=162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}