[Ardour-Users] more input sought on other MIDI sequencer behaviour

David Santamauro david.santamauro at gmail.com
Wed Jun 22 17:05:12 PDT 2011

Hi Paul,

On Wed, 22 Jun 2011 16:37:08 -0400
Paul Davis <paul at linuxaudiosystems.com> wrote:

> another similar question has arisen which i think can best be settled
> by comparison with existing sequencers. the question is: what happens
> when you split an existing region in the middle of a note.

Here are the results in Sonar:

* note: the split dialog has a checkbox "enable non-destructive
  editing" which I checked

a) split 8-beat C4 after 4th beat. Without cropping either region, the
   entire note plays but the midi outline graphically disappears from
   the right clip
b) crop right region (which is essentially an empty region)
  - in piano roll, entire 8-beat event still graphically exists for
    the original duration.
  - playback: note-off is sent at end of left region, no note on is
    sent at the beginning of the right region (as noted above, Sonar
    basically erased it for the right region. Why,in the piano roll
    view it still showed as n 8-beat note, I kinda-of understand.
c) crop left region
  - track view shows the abbreviated midi outline
  - piano roll has now truncated the original value to the (un-cropped)
    value of the left region (4 beats) -- interesting behavior that,
    again, I kinda understand.

>    1) the earlier region sends a note off at its right (later)
> boundary, the later region never sends any note commands related to
> the split note

Sonar's behavior.

>    2) the earlier region sends a note off at its right (later)
> boundary, the later region sends a note on at its left (earlier)
> boundary
>    3) neither region sends any extra note on or note off commands

Neither (2) nor (3) make sense in my opinion.



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