possible bug with exporting overlapping notes to Midi file

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possible bug with exporting overlapping notes to Midi file

Darcy Kahle
List:

I realize that I am running a relatively older version of Rosegarden,
but I think I have uncovered a bug relating to exporting Midi.  I am
running Rosegarden "Imagination", v 13.06, QT 4.6.2, Build Key 8bb9473428.

Steps to recreate:

1. open a new file

2. Add a 3 bar segment (can be any size - this is not related to the bug)

3. Put a quarter note at the start of the segment (any note of your choice)

4. Put an eighth note overlapping the quarter note (I put the quarter
and eighth notes to start at the start of the segment, same note)

5. Export this to Midi

6. Open the Midi file that you just exported.  You will notice that the
note(s) you entered are no longer a quarter note or eighth note, but
much longer (mine was 3 bars long).

It should be noted that any later notes on the same line will be longer
too, but other notes will be unaffected.  It appears that overlapping
notes causes this effect.


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Re: possible bug with exporting overlapping notes to Midi file

Ted Felix-2
On 02/22/2017 11:32 PM, Darcy Kahle wrote:
> 4. Put an eighth note overlapping the quarter note (I put the quarter
> and eighth notes to start at the start of the segment, same note)

   That was a bit tricky to do for me.  I'm using the notation editor
and I dropped a quarter note, then moved it over top of the eighth note.

> 6. Open the Midi file that you just exported.  You will notice that the
> note(s) you entered are no longer a quarter note or eighth note, but
> much longer (mine was 3 bars long).

   Confirmed in 13.06.  Confirmed as fixed in 16.06 and the latest svn.
I recommend upgrading to 16.06.  (The latest svn is a bit unstable right
now with cosmetic work that is in progress.)

   Let us know if you need help building 16.06.

Ted.

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Re: possible bug with exporting overlapping notes to Midi file

Darcy Kahle
Thanks for confirming and identifying the version that it is fixed in.  
I will try and find some time to upgrade to the current available
version (not the svn version) from source.

As for adding the overlapping notes, I do not use the notation editor,
but the piano-roll type editor.  It is easy to enter there.


On 2017-02-23 3:29 PM, Ted Felix wrote:

> On 02/22/2017 11:32 PM, Darcy Kahle wrote:
>> 4. Put an eighth note overlapping the quarter note (I put the quarter
>> and eighth notes to start at the start of the segment, same note)
>     That was a bit tricky to do for me.  I'm using the notation editor
> and I dropped a quarter note, then moved it over top of the eighth note.
>
>> 6. Open the Midi file that you just exported.  You will notice that the
>> note(s) you entered are no longer a quarter note or eighth note, but
>> much longer (mine was 3 bars long).
>     Confirmed in 13.06.  Confirmed as fixed in 16.06 and the latest svn.
> I recommend upgrading to 16.06.  (The latest svn is a bit unstable right
> now with cosmetic work that is in progress.)
>
>     Let us know if you need help building 16.06.
>
> Ted.
>
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> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
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Re: possible bug with exporting overlapping notes to Midi file

Darcy Kahle
In reply to this post by Ted Felix-2
Just to let you know, I attempted to compile Rosegarden 16.0.6, but ran
into the problem that it requires Qt 4.8, and the latest version
available to my distro is 4.6.2.  I am now faced with either trying to
upgrade QT to at least 4.8, or to figure out how to install Qt 5
side-by-side with Qt 4 (likely the better solution) and use that version
to compile Rosegarden.


On 2017-02-23 3:29 PM, Ted Felix wrote:

> On 02/22/2017 11:32 PM, Darcy Kahle wrote:
>> 4. Put an eighth note overlapping the quarter note (I put the quarter
>> and eighth notes to start at the start of the segment, same note)
>     That was a bit tricky to do for me.  I'm using the notation editor
> and I dropped a quarter note, then moved it over top of the eighth note.
>
>> 6. Open the Midi file that you just exported.  You will notice that the
>> note(s) you entered are no longer a quarter note or eighth note, but
>> much longer (mine was 3 bars long).
>     Confirmed in 13.06.  Confirmed as fixed in 16.06 and the latest svn.
> I recommend upgrading to 16.06.  (The latest svn is a bit unstable right
> now with cosmetic work that is in progress.)
>
>     Let us know if you need help building 16.06.
>
> Ted.
>
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> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
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> Rosegarden-user mailing list
> [hidden email] - use the link below to unsubscribe
> https://lists.sourceforge.net/lists/listinfo/rosegarden-user
>


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Re: possible bug with exporting overlapping notes to Midi file

D. Michael McIntyre-3
On 02/28/2017 12:35 AM, Darcy Kahle wrote:
> Just to let you know, I attempted to compile Rosegarden 16.0.6, but ran
> into the problem that it requires Qt 4.8, and the latest version
> available to my distro is 4.6.2.  I am now faced with either trying to
> upgrade QT to at least 4.8, or to figure out how to install Qt 5
> side-by-side with Qt 4 (likely the better solution) and use that version
> to compile Rosegarden.

I recommend grabbing the binary distribution of Qt5 and building with
that.  That's how I used to test Qt5 builds before upgrading my distro.
It's fairly painless.

--
D. Michael McIntyre

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