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Diffstat (limited to 'docs/feature_midi.md')
| -rw-r--r-- | docs/feature_midi.md | 306 |
1 files changed, 153 insertions, 153 deletions
diff --git a/docs/feature_midi.md b/docs/feature_midi.md index 7823b66113..1f0809ef14 100644 --- a/docs/feature_midi.md +++ b/docs/feature_midi.md @@ -80,164 +80,164 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = { ### Keycodes -|Keycode |Aliases |Description | -|------------|---------|---------------------------------| -|`MI_ON` | |Turn MIDI on | -|`MI_OFF` | |Turn MIDI off | -|`MI_TOG` | |Toggle MIDI enabled | -|`MI_C` | |C octave 0 | -|`MI_Cs` |`MI_Db` |C♯/D♭ octave 0 | -|`MI_D` | |D octave 0 | -|`MI_Ds` |`MI_Eb` |D♯/E♭ octave 0 | -|`MI_E` | |E octave 0 | -|`MI_F` | |F octave 0 | -|`MI_Fs` |`MI_Gb` |F♯/G♭ octave 0 | -|`MI_G` | |G octave 0 | -|`MI_Gs` |`MI_Gs` |G♯/A♭ octave 0 | -|`MI_A` | |A octave 0 | -|`MI_As` |`MI_Bb` |A♯/B♭ octave 0 | -|`MI_B` | |B octave 0 | -|`MI_C_1` | |C octave 1 | -|`MI_Cs_1` |`MI_Db_1`|C♯/D♭ octave 1 | -|`MI_D_1` | |D octave 1 | -|`MI_Ds_1` |`MI_Eb_1`|D♯/E♭ octave 1 | -|`MI_E_1` | |E octave 1 | -|`MI_F_1` | |F octave 1 | -|`MI_Fs_1` |`MI_Gb_1`|F♯/G♭ octave 1 | -|`MI_G_1` | |G octave 1 | -|`MI_Gs_1` |`MI_Ab_1`|G♯/A♭ octave 1 | -|`MI_A_1` | |A octave 1 | -|`MI_As_1` |`MI_Bb_1`|A♯/B♭ octave 1 | -|`MI_B_1` | |B octave 1 | -|`MI_C_2` | |C octave 2 | -|`MI_Cs_2` |`MI_Db_2`|C♯/D♭ octave 2 | -|`MI_D_2` | |D octave 2 | -|`MI_Ds_2` |`MI_Eb_2`|D♯/E♭ octave 2 | -|`MI_E_2` | |E octave 2 | -|`MI_F_2` | |F octave 2 | -|`MI_Fs_2` |`MI_Gb_2`|F♯/G♭ octave 2 | -|`MI_G_2` | |G octave 2 | -|`MI_Gs_2` |`MI_Ab_2`|G♯/A♭ octave 2 | -|`MI_A_2` | |A octave 2 | -|`MI_As_2` |`MI_Bb_2`|A♯/B♭ octave 2 | -|`MI_B_2` | |B octave 2 | -|`MI_C_3` | |C octave 3 | -|`MI_Cs_3` |`MI_Db_3`|C♯/D♭ octave 3 | -|`MI_D_3` | |D octave 3 | -|`MI_Ds_3` |`MI_Eb_3`|D♯/E♭ octave 3 | -|`MI_E_3` | |E octave 3 | -|`MI_F_3` | |F octave 3 | -|`MI_Fs_3` |`MI_Gb_3`|F♯/G♭ octave 3 | -|`MI_G_3` | |G octave 3 | -|`MI_Gs_3` |`MI_Ab_3`|G♯/A♭ octave 3 | -|`MI_A_3` | |A octave 3 | -|`MI_As_3` |`MI_Bb_3`|A♯/B♭ octave 3 | -|`MI_B_3` | |B octave 3 | -|`MI_C_4` | |C octave 4 | -|`MI_Cs_4` |`MI_Db_4`|C♯/D♭ octave 4 | -|`MI_D_4` | |D octave 4 | -|`MI_Ds_4` |`MI_Eb_4`|D♯/E♭ octave 4 | -|`MI_E_4` | |E octave 4 | -|`MI_F_4` | |F octave 4 | -|`MI_Fs_4` |`MI_Gb_4`|F♯/G♭ octave 4 | -|`MI_G_4` | |G octave 4 | -|`MI_Gs_4` |`MI_Ab_4`|G♯/A♭ octave 4 | -|`MI_A_4` | |A octave 4 | -|`MI_As_4` |`MI_Bb_4`|A♯/B♭ octave 4 | -|`MI_B_4` | |B octave 4 | -|`MI_C_5` | |C octave 5 | -|`MI_Cs_5` |`MI_Db_5`|C♯/D♭ octave 5 | -|`MI_D_5` | |D octave 5 | -|`MI_Ds_5` |`MI_Eb_5`|D♯/E♭ octave 5 | -|`MI_E_5` | |E octave 5 | -|`MI_F_5` | |F octave 5 | -|`MI_Fs_5` |`MI_Gb_5`|F♯/G♭ octave 5 | -|`MI_G_5` | |G octave 5 | -|`MI_Gs_5` |`MI_Ab_5`|G♯/A♭ octave 5 | -|`MI_A_5` | |A octave 5 | -|`MI_As_5` |`MI_Bb_5`|A♯/B♭ octave 5 | -|`MI_B_5` | |B octave 5 | -|`MI_OCT_N2` | |Set octave to -2 | -|`MI_OCT_N1` | |Set octave to -1 | -|`MI_OCT_0` | |Set octave to 0 | -|`MI_OCT_1` | |Set octave to 1 | -|`MI_OCT_2` | |Set octave to 2 | -|`MI_OCT_3` | |Set octave to 3 | -|`MI_OCT_4` | |Set octave to 4 | -|`MI_OCT_5` | |Set octave to 5 | -|`MI_OCT_6` | |Set octave to 6 | -|`MI_OCT_7` | |Set octave to 7 | -|`MI_OCTD` | |Move down an octave | -|`MI_OCTU` | |Move up an octave | -|`MI_TRNS_N6`| |Set transposition to -6 semitones| -|`MI_TRNS_N5`| |Set transposition to -5 semitones| -|`MI_TRNS_N4`| |Set transposition to -4 semitones| -|`MI_TRNS_N3`| |Set transposition to -3 semitones| -|`MI_TRNS_N2`| |Set transposition to -2 semitones| -|`MI_TRNS_N1`| |Set transposition to -1 semitone | -|`MI_TRNS_0` | |No transposition | -|`MI_TRNS_1` | |Set transposition to +1 semitone | -|`MI_TRNS_2` | |Set transposition to +2 semitones| -|`MI_TRNS_3` | |Set transposition to +3 semitones| -|`MI_TRNS_4` | |Set transposition to +4 semitones| -|`MI_TRNS_5` | |Set transposition to +5 semitones| -|`MI_TRNS_6` | |Set transposition to +6 semitones| -|`MI_TRNSD` | |Decrease transposition | -|`MI_TRNSU` | |Increase transposition | -|`MI_VEL_0` | |Set velocity to 0 | -|`MI_VEL_1` | |Set velocity to 12 | -|`MI_VEL_2` | |Set velocity to 25 | -|`MI_VEL_3` | |Set velocity to 38 | -|`MI_VEL_4` | |Set velocity to 51 | -|`MI_VEL_5` | |Set velocity to 64 | -|`MI_VEL_6` | |Set velocity to 76 | -|`MI_VEL_7` | |Set velocity to 89 | -|`MI_VEL_8` | |Set velocity to 102 | -|`MI_VEL_9` | |Set velocity to 114 | -|`MI_VEL_10` | |Set velocity to 127 | -|`MI_VELD` | |Decrease velocity | -|`MI_VELU` | |Increase velocity | -|`MI_CH1` | |Set channel to 1 | -|`MI_CH2` | |Set channel to 2 | -|`MI_CH3` | |Set channel to 3 | -|`MI_CH4` | |Set channel to 4 | -|`MI_CH5` | |Set channel to 5 | -|`MI_CH6` | |Set channel to 6 | -|`MI_CH7` | |Set channel to 7 | -|`MI_CH8` | |Set channel to 8 | -|`MI_CH9` | |Set channel to 9 | -|`MI_CH10` | |Set channel to 10 | -|`MI_CH11` | |Set channel to 11 | -|`MI_CH12` | |Set channel to 12 | -|`MI_CH13` | |Set channel to 13 | -|`MI_CH14` | |Set channel to 14 | -|`MI_CH15` | |Set channel to 15 | -|`MI_CH16` | |Set channel to 16 | -|`MI_CHD` | |Decrease channel | -|`MI_CHU` | |Increase channel | -|`MI_ALLOFF` | |Stop all notes | -|`MI_SUS` | |Sustain | -|`MI_PORT` | |Portmento | -|`MI_SOST` | |Sostenuto | -|`MI_SOFT` | |Soft Pedal | -|`MI_LEG` | |Legato | -|`MI_MOD` | |Modulation | -|`MI_MODSD` | |Decrease modulation speed | -|`MI_MODSU` | |Increase modulation speed | -|`MI_BENDD` | |Bend pitch down | -|`MI_BENDU` | |Bend pitch up | +|Keycode |Aliases |Description | +|-------------------------------|------------------|---------------------------------| +|`QK_MIDI_ON` |`MI_ON` |Turn MIDI on | +|`QK_MIDI_OFF` |`MI_OFF` |Turn MIDI off | +|`QK_MIDI_TOGGLE` |`MI_TOGG` |Toggle MIDI enabled | +|`QK_MIDI_NOTE_C_0` |`MI_C` |C octave 0 | +|`QK_MIDI_NOTE_C_SHARP_0` |`MI_Cs`, `MI_Db` |C♯/D♭ octave 0 | +|`QK_MIDI_NOTE_D_0` |`MI_D` |D octave 0 | +|`QK_MIDI_NOTE_D_SHARP_0` |`MI_Ds`, `MI_Eb` |D♯/E♭ octave 0 | +|`QK_MIDI_NOTE_E_0` |`MI_E` |E octave 0 | +|`QK_MIDI_NOTE_F_0` |`MI_F` |F octave 0 | +|`QK_MIDI_NOTE_F_SHARP_0` |`MI_Fs`, `MI_Gb` |F♯/G♭ octave 0 | +|`QK_MIDI_NOTE_G_0` |`MI_G` |G octave 0 | +|`QK_MIDI_NOTE_G_SHARP_0` |`MI_Gs`, `MI_Ab` |G♯/A♭ octave 0 | +|`QK_MIDI_NOTE_A_0` |`MI_A` |A octave 0 | +|`QK_MIDI_NOTE_A_SHARP_0` |`MI_As`, `MI_Bb` |A♯/B♭ octave 0 | +|`QK_MIDI_NOTE_B_0` |`MI_B` |B octave 0 | +|`QK_MIDI_NOTE_C_1` |`MI_C1` |C octave 1 | +|`QK_MIDI_NOTE_C_SHARP_1` |`MI_Cs1`, `MI_Db1`|C♯/D♭ octave 1 | +|`QK_MIDI_NOTE_D_1` |`MI_D1` |D octave 1 | +|`QK_MIDI_NOTE_D_SHARP_1` |`MI_Ds1`, `MI_Eb1`|D♯/E♭ octave 1 | +|`QK_MIDI_NOTE_E_1` |`MI_E1` |E octave 1 | +|`QK_MIDI_NOTE_F_1` |`MI_F1` |F octave 1 | +|`QK_MIDI_NOTE_F_SHARP_1` |`MI_Fs1`, `MI_Gb1`|F♯/G♭ octave 1 | +|`QK_MIDI_NOTE_G_1` |`MI_G1` |G octave 1 | +|`QK_MIDI_NOTE_G_SHARP_1` |`MI_Gs1`, `MI_Ab1`|G♯/A♭ octave 1 | +|`QK_MIDI_NOTE_A_1` |`MI_A1` |A octave 1 | +|`QK_MIDI_NOTE_A_SHARP_1` |`MI_As1`, `MI_Bb1`|A♯/B♭ octave 1 | +|`QK_MIDI_NOTE_B_1` |`MI_B1` |B octave 1 | +|`QK_MIDI_NOTE_C_2` |`MI_C2` |C octave 2 | +|`QK_MIDI_NOTE_C_SHARP_2` |`MI_Cs2`, `MI_Db2`|C♯/D♭ octave 2 | +|`QK_MIDI_NOTE_D_2` |`MI_D2` |D octave 2 | +|`QK_MIDI_NOTE_D_SHARP_2` |`MI_Ds2`, `MI_Eb2`|D♯/E♭ octave 2 | +|`QK_MIDI_NOTE_E_2` |`MI_E2` |E octave 2 | +|`QK_MIDI_NOTE_F_2` |`MI_F2` |F octave 2 | +|`QK_MIDI_NOTE_F_SHARP_2` |`MI_Fs2`, `MI_Gb2`|F♯/G♭ octave 2 | +|`QK_MIDI_NOTE_G_2` |`MI_G2` |G octave 2 | +|`QK_MIDI_NOTE_G_SHARP_2` |`MI_Gs2`, `MI_Ab2`|G♯/A♭ octave 2 | +|`QK_MIDI_NOTE_A_2` |`MI_A2` |A octave 2 | +|`QK_MIDI_NOTE_A_SHARP_2` |`MI_As2`, `MI_Bb2`|A♯/B♭ octave 2 | +|`QK_MIDI_NOTE_B_2` |`MI_B2` |B octave 2 | +|`QK_MIDI_NOTE_C_3` |`MI_C3` |C octave 3 | +|`QK_MIDI_NOTE_C_SHARP_3` |`MI_Cs3`, `MI_Db3`|C♯/D♭ octave 3 | +|`QK_MIDI_NOTE_D_3` |`MI_D3` |D octave 3 | +|`QK_MIDI_NOTE_D_SHARP_3` |`MI_Ds3`, `MI_Eb3`|D♯/E♭ octave 3 | +|`QK_MIDI_NOTE_E_3` |`MI_E3` |E octave 3 | +|`QK_MIDI_NOTE_F_3` |`MI_F3` |F octave 3 | +|`QK_MIDI_NOTE_F_SHARP_3` |`MI_Fs3`, `MI_Gb3`|F♯/G♭ octave 3 | +|`QK_MIDI_NOTE_G_3` |`MI_G3` |G octave 3 | +|`QK_MIDI_NOTE_G_SHARP_3` |`MI_Gs3`, `MI_Ab3`|G♯/A♭ octave 3 | +|`QK_MIDI_NOTE_A_3` |`MI_A3` |A octave 3 | +|`QK_MIDI_NOTE_A_SHARP_3` |`MI_As3`, `MI_Bb3`|A♯/B♭ octave 3 | +|`QK_MIDI_NOTE_B_3` |`MI_B3` |B octave 3 | +|`QK_MIDI_NOTE_C_4` |`MI_C4` |C octave 4 | +|`QK_MIDI_NOTE_C_SHARP_4` |`MI_Cs4`, `MI_Db4`|C♯/D♭ octave 4 | +|`QK_MIDI_NOTE_D_4` |`MI_D4` |D octave 4 | +|`QK_MIDI_NOTE_D_SHARP_4` |`MI_Ds4`, `MI_Eb4`|D♯/E♭ octave 4 | +|`QK_MIDI_NOTE_E_4` |`MI_E4` |E octave 4 | +|`QK_MIDI_NOTE_F_4` |`MI_F4` |F octave 4 | +|`QK_MIDI_NOTE_F_SHARP_4` |`MI_Fs4`, `MI_Gb4`|F♯/G♭ octave 4 | +|`QK_MIDI_NOTE_G_4` |`MI_G4` |G octave 4 | +|`QK_MIDI_NOTE_G_SHARP_4` |`MI_Gs4`, `MI_Ab4`|G♯/A♭ octave 4 | +|`QK_MIDI_NOTE_A_4` |`MI_A4` |A octave 4 | +|`QK_MIDI_NOTE_A_SHARP_4` |`MI_As4`, `MI_Bb4`|A♯/B♭ octave 4 | +|`QK_MIDI_NOTE_B_4` |`MI_B4` |B octave 4 | +|`QK_MIDI_NOTE_C_5` |`MI_C5` |C octave 5 | +|`QK_MIDI_NOTE_C_SHARP_5` |`MI_Cs5`, `MI_Db5`|C♯/D♭ octave 5 | +|`QK_MIDI_NOTE_D_5` |`MI_D5` |D octave 5 | +|`QK_MIDI_NOTE_D_SHARP_5` |`MI_Ds5`, `MI_Eb5`|D♯/E♭ octave 5 | +|`QK_MIDI_NOTE_E_5` |`MI_E5` |E octave 5 | +|`QK_MIDI_NOTE_F_5` |`MI_F5` |F octave 5 | +|`QK_MIDI_NOTE_F_SHARP_5` |`MI_Fs5`, `MI_Gb5`|F♯/G♭ octave 5 | +|`QK_MIDI_NOTE_G_5` |`MI_G5` |G octave 5 | +|`QK_MIDI_NOTE_G_SHARP_5` |`MI_Gs5`, `MI_Ab5`|G♯/A♭ octave 5 | +|`QK_MIDI_NOTE_A_5` |`MI_A5` |A octave 5 | +|`QK_MIDI_NOTE_A_SHARP_5` |`MI_As5`, `MI_Bb5`|A♯/B♭ octave 5 | +|`QK_MIDI_NOTE_B_5` |`MI_B5` |B octave 5 | +|`QK_MIDI_OCTAVE_N2` |`MI_OCN2` |Set octave to -2 | +|`QK_MIDI_OCTAVE_N1` |`MI_OCN1` |Set octave to -1 | +|`QK_MIDI_OCTAVE_0` |`MI_OC0` |Set octave to 0 | +|`QK_MIDI_OCTAVE_1` |`MI_OC1` |Set octave to 1 | +|`QK_MIDI_OCTAVE_2` |`MI_OC2` |Set octave to 2 | +|`QK_MIDI_OCTAVE_3` |`MI_OC3` |Set octave to 3 | +|`QK_MIDI_OCTAVE_4` |`MI_OC4` |Set octave to 4 | +|`QK_MIDI_OCTAVE_5` |`MI_OC5` |Set octave to 5 | +|`QK_MIDI_OCTAVE_6` |`MI_OC6` |Set octave to 6 | +|`QK_MIDI_OCTAVE_7` |`MI_OC7` |Set octave to 7 | +|`QK_MIDI_OCTAVE_DOWN` |`MI_OCTD` |Move down an octave | +|`QK_MIDI_OCTAVE_UP` |`MI_OCTU` |Move up an octave | +|`QK_MIDI_TRANSPOSE_N6` |`MI_TRN6` |Set transposition to -6 semitones| +|`QK_MIDI_TRANSPOSE_N5` |`MI_TRN5` |Set transposition to -5 semitones| +|`QK_MIDI_TRANSPOSE_N4` |`MI_TRN4` |Set transposition to -4 semitones| +|`QK_MIDI_TRANSPOSE_N3` |`MI_TRN3` |Set transposition to -3 semitones| +|`QK_MIDI_TRANSPOSE_N2` |`MI_TRN2` |Set transposition to -2 semitones| +|`QK_MIDI_TRANSPOSE_N1` |`MI_TRN1` |Set transposition to -1 semitone | +|`QK_MIDI_TRANSPOSE_0` |`MI_TR0` |No transposition | +|`QK_MIDI_TRANSPOSE_1` |`MI_TR1` |Set transposition to +1 semitone | +|`QK_MIDI_TRANSPOSE_2` |`MI_TR2` |Set transposition to +2 semitones| +|`QK_MIDI_TRANSPOSE_3` |`MI_TR3` |Set transposition to +3 semitones| +|`QK_MIDI_TRANSPOSE_4` |`MI_TR4` |Set transposition to +4 semitones| +|`QK_MIDI_TRANSPOSE_5` |`MI_TR5` |Set transposition to +5 semitones| +|`QK_MIDI_TRANSPOSE_6` |`MI_TR6` |Set transposition to +6 semitones| +|`QK_MIDI_TRANSPOSE_DOWN` |`MI_TRSD` |Decrease transposition | +|`QK_MIDI_TRANSPOSE_UP` |`MI_TRSU` |Increase transposition | +|`QK_MIDI_VELOCITY_0` |`MI_VL0` |Set velocity to 0 | +|`QK_MIDI_VELOCITY_1` |`MI_VL1` |Set velocity to 12 | +|`QK_MIDI_VELOCITY_2` |`MI_VL2` |Set velocity to 25 | +|`QK_MIDI_VELOCITY_3` |`MI_VL3` |Set velocity to 38 | +|`QK_MIDI_VELOCITY_4` |`MI_VL4` |Set velocity to 51 | +|`QK_MIDI_VELOCITY_5` |`MI_VL5` |Set velocity to 64 | +|`QK_MIDI_VELOCITY_6` |`MI_VL6` |Set velocity to 76 | +|`QK_MIDI_VELOCITY_7` |`MI_VL7` |Set velocity to 89 | +|`QK_MIDI_VELOCITY_8` |`MI_VL8` |Set velocity to 102 | +|`QK_MIDI_VELOCITY_9` |`MI_VL9` |Set velocity to 114 | +|`QK_MIDI_VELOCITY_10` |`MI_VL10` |Set velocity to 127 | +|`QK_MIDI_VELOCITY_DOWN` |`MI_VELD` |Decrease velocity | +|`QK_MIDI_VELOCITY_UP` |`MI_VELU` |Increase velocity | +|`QK_MIDI_CHANNEL_1` |`MI_CH1` |Set channel to 1 | +|`QK_MIDI_CHANNEL_2` |`MI_CH2` |Set channel to 2 | +|`QK_MIDI_CHANNEL_3` |`MI_CH3` |Set channel to 3 | +|`QK_MIDI_CHANNEL_4` |`MI_CH4` |Set channel to 4 | +|`QK_MIDI_CHANNEL_5` |`MI_CH5` |Set channel to 5 | +|`QK_MIDI_CHANNEL_6` |`MI_CH6` |Set channel to 6 | +|`QK_MIDI_CHANNEL_7` |`MI_CH7` |Set channel to 7 | +|`QK_MIDI_CHANNEL_8` |`MI_CH8` |Set channel to 8 | +|`QK_MIDI_CHANNEL_9` |`MI_CH9` |Set channel to 9 | +|`QK_MIDI_CHANNEL_10` |`MI_CH10` |Set channel to 10 | +|`QK_MIDI_CHANNEL_11` |`MI_CH11` |Set channel to 11 | +|`QK_MIDI_CHANNEL_12` |`MI_CH12` |Set channel to 12 | +|`QK_MIDI_CHANNEL_13` |`MI_CH13` |Set channel to 13 | +|`QK_MIDI_CHANNEL_14` |`MI_CH14` |Set channel to 14 | +|`QK_MIDI_CHANNEL_15` |`MI_CH15` |Set channel to 15 | +|`QK_MIDI_CHANNEL_16` |`MI_CH16` |Set channel to 16 | +|`QK_MIDI_CHANNEL_DOWN` |`MI_CHND` |Decrease channel | +|`QK_MIDI_CHANNEL_UP` |`MI_CHNU` |Increase channel | +|`QK_MIDI_ALL_NOTES_OFF` |`MI_AOFF` |Stop all notes | +|`QK_MIDI_SUSTAIN` |`MI_SUST` |Sustain | +|`QK_MIDI_PORTAMENTO` |`MI_PORT` |Portmento | +|`QK_MIDI_SOSTENUTO` |`MI_SOST` |Sostenuto | +|`QK_MIDI_SOFT` |`MI_SOFT` |Soft Pedal | +|`QK_MIDI_LEGATO` |`MI_LEG` |Legato | +|`QK_MIDI_MODULATION` |`MI_MOD` |Modulation | +|`QK_MIDI_MODULATION_SPEED_DOWN`|`MI_MODD` |Decrease modulation speed | +|`QK_MIDI_MODULATION_SPEED_UP` |`MI_MODU` |Increase modulation speed | +|`QK_MIDI_PITCH_BEND_DOWN` |`MI_BNDD` |Bend pitch down | +|`QK_MIDI_PITCH_BEND_UP` |`MI_BNDU` |Bend pitch up | ### Configuration Certain values are stored in the `midi_config` struct. This configuration is not persisted to EEPROM. By default, these values are: -|Configuration |Value|Comments | -|-------------------|-----|-------------------------| -|Octave |`4` |Corresponds to `MI_OCT_2`| -|Transposition |`0` | | -|Velocity |`127`| | -|Channel |`0` | | -|Modulation Interval|`8` | | +|Configuration |Value|Comments | +|-------------------|-----|-----------------------| +|Octave |`4` |Corresponds to `MI_OC2`| +|Transposition |`0` | | +|Velocity |`127`| | +|Channel |`0` | | +|Modulation Interval|`8` | | For the above, the `MI_C` keycode will produce a C3 (note number 48), and so on. |