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Diffstat (limited to 'backends/midi.md')
| -rw-r--r-- | backends/midi.md | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/backends/midi.md b/backends/midi.md index 4732452..87d06a1 100644 --- a/backends/midi.md +++ b/backends/midi.md @@ -56,8 +56,11 @@ midi1.ch0.nrpn900 > midi2.ch0.rpn1 ``` #### Known bugs / problems -Extended parameter numbers (`rpn` and `nrpn` control types) can currently only be transmitted, not properly -received as such. Support for this functionality is planned. +Extended parameter numbers (EPNs, the `rpn` and `nrpn` control types) will also generate events on the controls (CC 101 through +98, 38 and 6) that are used as the lower layer transport. When using EPNs, mapping those controls is probably not useful. + +EPN control types support only the full 14-bit transfer encoding, not the shorter variant transmitting only the 7 +high-order bits. This may be changed if there is sufficient interest in the functionality. To access MIDI data, the user running MIDIMonster needs read & write access to the ALSA sequencer. This can usually be done by adding this user to the `audio` system group. |