qmidiarp-user — qmidiarp user discussion

[Qmidiarp-user] Re : Re : Feature Request: Export Functionality

[Frank K. <goe...@ya...>]

----- Mail original -----
> De : S C Rigler <rig...@gm...>
> À : Frank Kober <goe...@ya...>
> Cc : "qmi...@li..." <qmi...@li...>
> Envoyé le : Lundi 13 Juin 2011 1h55
> Objet : Re: Re : [Qmidiarp-user] Feature Request: Export Functionality

> The
> weird thing is once I play back the sequence from Qtractor and the
> system is under load I don't hear any noticeable jitter.
> 

That is interesting indeed. Since Qtractor lets you choose different timers, do you use a timer different from the first entry in Qtractor's timer choice for the ALSA queue? And secondly, does seq24 also give no jitter in your case? There might be something to fix...


Frank

[Qmidiarp-user] Feature Request

[Sascha S. <ung...@gm...>]

Would it be possible to have some settings
that let you choose the actual midi-interface to use as 1 or 2??
Or let QMidiArp use hardware midi-interfaces in addition??
I'm working with hw-synths and have to use QJackCtl to route the
midi-connections, cause Alsa-Patchbay crashes on my systems.
I have one Midi-pair on my Audiophile 2496 and 2 Midi-Pairs on my
Edirol UM-2G and I would love to route directly from within qmidiarp.

Sadly my programming-skills in CPP are not good enough to do something
like this :(

greetings from belgium

Re: [Qmidiarp-user] Re : Feature Request: Export Functionality

[S C R. <rig...@gm...>]

On Sun, Jun 12, 2011 at 1:37 PM, Frank Kober <goe...@ya...> wrote:
> Hi Steve,
>
>
> Any attempts made to reduce your jitter? Do you have this with ALSA in general?
> Then a kernel with 1000Hz timer might arrange things. If the jitter happens with
> JACK MIDI Sync, maybe a reduced latency can improve the situation.
>
> How would you export the MIDI data? With a tool like QMidiArp, mainly done for
> live play/editing it would need an inbuilt recording tool. Is this what you have in mind?
> Otherwise, exporting the sequences and LFO data as MIDI files should not be a
> problem but you could do this with other tools as well.
> Have you tried recording QMidiArp's output into Qtractor for instance?
>
> Regards
> Frank
>

I've tried to reduce the jitter as much as I can.  I'm running 2.6.39
right and it was built doing "make oldconfig" against the config from
a Planet CCRMA RT kernel so it has a 1000HZ timer.

What I was hoping for was something where the sequences and LFO data
could be exported as midi files.

I've been experimenting a bit and it seems that this is mainly a
problem when the system is under load.  When I record QMidiArp into
Qtractor it lags a little bit, but not so much that quantizing doesn't
put things back into time.  However, when QTractor is also sequencing
an instance of Yoshimi things start to lag quite a bit more and get
inconsistent enough that quantizing will help, but it needs quite a
bit of manual cleanup afterward.  If QMidiArp is sequencing the
Yoshimi instance and simultaneously recording into Qtractor then it
gets so inconsistent that quantizing just makes things worse.  The
weird thing is once I play back the sequence from Qtractor and the
system is under load I don't hear any noticeable jitter.

But anyways, I think I have a workaround for now.

Thanks,
Steve

[Qmidiarp-user] Re : Feature Request: Export Functionality

[Frank K. <goe...@ya...>]

Hi Steve,



----- Mail original -----
> De : S C Rigler <rig...@gm...>
> À : qmi...@li...
> Cc : 
> Envoyé le : Dimanche 12 Juin 2011 19h47
> Objet : [Qmidiarp-user] Feature Request: Export Functionality
> 
> Hello,
> 
> I've been playing around with qmidiarp and it's really a fantastic
> tool.  One problem I have right now is with jitter on my system.  I
> primarily use qmidiarp for recording, and one way for me to workaround
> the jitter might be to have an export function so that I could dump to
> a mid file and import into another sequencer.  Is this a doable
> request?
> 
> --Steve
> 

Any attempts made to reduce your jitter? Do you have this with ALSA in general?
Then a kernel with 1000Hz timer might arrange things. If the jitter happens with
JACK MIDI Sync, maybe a reduced latency can improve the situation.

How would you export the MIDI data? With a tool like QMidiArp, mainly done for 
live play/editing it would need an inbuilt recording tool. Is this what you have in mind?
Otherwise, exporting the sequences and LFO data as MIDI files should not be a
problem but you could do this with other tools as well. 
Have you tried recording QMidiArp's output into Qtractor for instance?

Regards
Frank

Re: [Qmidiarp-user] Feature Request: Export Functionality

[Sascha S. <ung...@gm...>]

Hi,
I think the problem will be that you will have to define which notes
should be exported.
If you use an arpeggiator the notes you press on the keyboard make the
sound, so you must record
the notes generated and this only makes sense with another sequencer.

If you only use the sequencer, setting the right quantisation in the
DAW might help

Maybe I am wrong ...

greetings from belgium, Sascha

2011/6/12 S C Rigler <rig...@gm...>:
> Hello,
>
> I've been playing around with qmidiarp and it's really a fantastic
> tool.  One problem I have right now is with jitter on my system.  I
> primarily use qmidiarp for recording, and one way for me to workaround
> the jitter might be to have an export function so that I could dump to
> a mid file and import into another sequencer.  Is this a doable
> request?
>
> --Steve
>
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[Qmidiarp-user] Feature Request: Export Functionality

[S C R. <rig...@gm...>]

Hello,

I've been playing around with qmidiarp and it's really a fantastic
tool.  One problem I have right now is with jitter on my system.  I
primarily use qmidiarp for recording, and one way for me to workaround
the jitter might be to have an export function so that I could dump to
a mid file and import into another sequencer.  Is this a doable
request?

--Steve

[Qmidiarp-user] Re : rediscovering QMidiArp

[Frank K. <goe...@ya...>]

----- Mail original -----
> De : Sascha Schneider <ung...@gm...>
> À : qmi...@li...
> Cc : 
> Envoyé le : Mercredi 8 Juin 2011 18h41
> Objet : [Qmidiarp-user] rediscovering QMidiArp
> 
>T hanks Frank for this wonderfull tool, just rediscovering and enjoying it :)
> 
> greetings from belgium

Thanks for your comment Sascha, good to hear it seems to work :)

Regards
Frank

[Qmidiarp-user] rediscovering QMidiArp

[Sascha S. <ung...@gm...>]

Thanks Frank for this wonderfull tool, just rediscovering and enjoying it :)

greetings from belgium

[Qmidiarp-user] Patch for qmidiarp-0.4.1

[Frank K. <goe...@ya...>]

Mainly two important issues regarding external synchronization and 
running stability with only Seq and Lfo modules are fixed by the 
qmidiarp-0.4.1-fixes.patch file available from the 0.4.1 Download 
directory. 
I'd like to thank Louigi Verona, Brendan Jones and Jeremy Jongepier for 
quickly reporting and insisting on these overseen issues.

Please apply this patch to 0.4.1 before building / distributing

Frank

-----------------

QMidiArp is available for download at

http://sourceforge.net/projects/qmidiarp/files/qmidiarp/0.4.1/

Project page

http://qmidiarp.sourceforge.net/

Git repo (developers welcome)

git://qmidiarp.git.sourceforge.net/gitroot/qmidiarp/qmidiarp