- Every MIDI note consists of two messages, a NoteOn and a NoteOff. Each one - has a note number and a channel (also a velocity, but that isn't relevant - here). The MIDI standard stresses that it is invalid to send a second NoteOn - for the same note number on the same channel before a NoteOff for the first - NoteOn. It is more or less impossible to do this with a physical MIDI - controller such as a keyboard, but remarkably easy to trigger when editing + Every MIDI note consists of two messages, a NoteOn and a NoteOff. Each one + has a note number and a channel (also a velocity, but that isn't relevant + here). The MIDI standard stresses that it is invalid to send a second NoteOn + for the same note number on the same channel before a NoteOff for the first + NoteOn. It is more or less impossible to do this with a physical MIDI + controller such as a keyboard, but remarkably easy to trigger when editing in a DAW—simply overlapping two instances of the same note will do it.
- Ardour offers many options for how to deal with instances where you overlap - two instances of the same note. Which one to use is a per-session property - and can be modified from Session > Properties > Misc > MIDI + Ardour offers many options for how to deal with instances where two instances + of the same note overlap. Which one to use is a per-session property and can + be modified from Session > Properties > Misc > MIDI Options.
-| never allow them | +Edits that would create note overlaps are not allowed |
|---|---|
| don't do anything in particular | +Ardour leaves overlapping notes alone—the behaviour of a MIDI receiver (plugin or hardware) is undefined |
| replace any overlapped existing note | +When one note is moved to overlap another, remove the one that wasn't being moved |
| shorten the overlapped existing note | +When one note is moved to overlap another, shorten the one that wasn't moved so that there is no overlap |
| shorten the overlapping new note | +When one note is moved to overlap another, shorten the one that was moved so that there is no overlap |
| replace both overlapping notes with a single note | +When one note is moved to overlap another, merge them both to form one (longer) note |
- Changing the option in use will not retroactively make changes—it will + Changing the option in use will not retroactively make changes—it will only affect new note overlaps created while the option remains chosen.
- Ardour does not check for note overlaps across tracks or even across regions. - If you create these, it is your responsibility to deal with the consequences. + Ardour does not check for note overlaps across tracks or even across regions. + Dealing with the consequences is up to the user.
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