I generated a repeating one measure drum score.  I run
it on an orchestra that just passes MIDI events to the
portaudio driver.  I chose a virtual MIDI cable as output
(LoopBe) that goes into a Reaper track with a Kontakt drum
instrument as the effect.  All goes well, but the timing
of the events seems a little erratic, and I suspect that
Csound is the culprit.  I remember reading on this list
long ago something about the uncertainty of when a MIDI
event may actually go out.  I'm setting ksmps=1 in case
that matters.

Here is some sample audio.  The score is timed correctly,
the values coming from a score generator program.  I believe
I'm hearing imperfect timing.


Thanks for any input.


Tobiah

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Hi Tobiah --

FWIW, I've had the same issue with MIDI sans Csound.
In 4/4 perpetually alternating a single quarter-note
and four 16ths, the 16th-group takes longer than the
quarter.  Not by much -- just enough to "overstuff".

I've been feeding MIDI output to PianoTeq.  Whether
in process the latter compounds this time-bloating,
I can't quite tell.

Good luck!

Peter


On 10/01/2017 10:55 AM, Tobiah wrote:
> I generated a repeating one measure drum score.  I run
> it on an orchestra that just passes MIDI events to the
> portaudio driver.  I chose a virtual MIDI cable as output
> (LoopBe) that goes into a Reaper track with a Kontakt drum
> instrument as the effect.  All goes well, but the timing
> of the events seems a little erratic, and I suspect that
> Csound is the culprit.  I remember reading on this list
> long ago something about the uncertainty of when a MIDI
> event may actually go out.  I'm setting ksmps=1 in case
> that matters.
>
> Here is some sample audio.  The score is timed correctly,
> the values coming from a score generator program.  I believe
> I'm hearing imperfect timing.
>
>
> Thanks for any input.
>
>
> Tobiah
>
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>         https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here

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I seem to remember someone experiencing timing improvement by using the --sample-accurate. It was probably k-rate timing and if you're using ksmps=1 it might not make a difference but it's easy to try out. 

Regards
Anders

> 1 okt. 2017 kl. 16:55 skrev Tobiah :
> 
> I generated a repeating one measure drum score.  I run
> it on an orchestra that just passes MIDI events to the
> portaudio driver.  I chose a virtual MIDI cable as output
> (LoopBe) that goes into a Reaper track with a Kontakt drum
> instrument as the effect.  All goes well, but the timing
> of the events seems a little erratic, and I suspect that
> Csound is the culprit.  I remember reading on this list
> long ago something about the uncertainty of when a MIDI
> event may actually go out.  I'm setting ksmps=1 in case
> that matters.
> 
> Here is some sample audio.  The score is timed correctly,
> the values coming from a score generator program.  I believe
> I'm hearing imperfect timing.
> 
> 
> Thanks for any input.
> 
> 
> Tobiah
> 
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>       https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here
> 

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You mean with cabbage, right?  I've never gotten the vst version
of csound to run in Reaper.


Tobiah



On 10/1/2017 11:38 AM, Rory Walsh wrote:
> Hi Tobiah. Why not simply run Csound inside Reaper rather than patching 
> MIDI signals around the place? I can't say for certain the timing issues 
> will disappear but I expect things might improve.
> 
> On 1 October 2017 at 16:46, PMA  > wrote:
> 
>     Hi Tobiah --
> 
>     FWIW, I've had the same issue with MIDI sans Csound.
>     In 4/4 perpetually alternating a single quarter-note
>     and four 16ths, the 16th-group takes longer than the
>     quarter.  Not by much -- just enough to "overstuff".
> 
>     I've been feeding MIDI output to PianoTeq.  Whether
>     in process the latter compounds this time-bloating,
>     I can't quite tell.
> 
>     Good luck!
> 
>     Peter
> 
> 
> 
>     On 10/01/2017 10:55 AM, Tobiah wrote:
> 
>         I generated a repeating one measure drum score.  I run
>         it on an orchestra that just passes MIDI events to the
>         portaudio driver.  I chose a virtual MIDI cable as output
>         (LoopBe) that goes into a Reaper track with a Kontakt drum
>         instrument as the effect.  All goes well, but the timing
>         of the events seems a little erratic, and I suspect that
>         Csound is the culprit.  I remember reading on this list
>         long ago something about the uncertainty of when a MIDI
>         event may actually go out.  I'm setting ksmps=1 in case
>         that matters.
> 
>         Here is some sample audio.  The score is timed correctly,
>         the values coming from a score generator program.  I believe
>         I'm hearing imperfect timing.
> 
> 
>         Thanks for any input.
> 
> 
>         Tobiah
> 
>         Csound mailing list
>         Csound@listserv.heanet.ie 
>         https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
>         
>         Send bugs reports to
>         https://github.com/csound/csound/issues
>         
>         Discussions of bugs and features can be posted here
> 
> 
>     Csound mailing list
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>     https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
>     
>     Send bugs reports to
>     https://github.com/csound/csound/issues
>     
>     Discussions of bugs and features can be posted here
> 
> 
> Csound mailing list Csound@listserv.heanet.ie 
>  
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to 
> https://github.com/csound/csound/issues Discussions of bugs and features 
> can be posted here

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On 10/03/2017 02:11 AM, Rory Walsh wrote:
> What was the problem?

It just can't load the .dll.  I'm talking about
csoundVST though, not cabbage.  I guess I'll have to
give cabbage a go.  With cabbage, can I just edit the
score and orc files without reloading anything from Reaper?

How does cabbage react when I manipulate the transport, pausing,
rewinding, etc.?


Thanks

Tobiah



> On 3 October 2017 at 00:56, Tobiah  > wrote:
> 
>     You mean with cabbage, right?  I've never gotten the vst version
>     of csound to run in Reaper.
> 
> 
>     Tobiah
> 
> 
> 
>     On 10/1/2017 11:38 AM, Rory Walsh wrote:
> 
>         Hi Tobiah. Why not simply run Csound inside Reaper rather than
>         patching MIDI signals around the place? I can't say for certain
>         the timing issues will disappear but I expect things might improve.
> 
>         On 1 October 2017 at 16:46, PMA                    >> wrote:
> 
>              Hi Tobiah --
> 
>              FWIW, I've had the same issue with MIDI sans Csound.
>              In 4/4 perpetually alternating a single quarter-note
>              and four 16ths, the 16th-group takes longer than the
>              quarter.  Not by much -- just enough to "overstuff".
> 
>              I've been feeding MIDI output to PianoTeq.  Whether
>              in process the latter compounds this time-bloating,
>              I can't quite tell.
> 
>              Good luck!
> 
>              Peter
> 
> 
> 
>              On 10/01/2017 10:55 AM, Tobiah wrote:
> 
>                  I generated a repeating one measure drum score.  I run
>                  it on an orchestra that just passes MIDI events to the
>                  portaudio driver.  I chose a virtual MIDI cable as output
>                  (LoopBe) that goes into a Reaper track with a Kontakt drum
>                  instrument as the effect.  All goes well, but the timing
>                  of the events seems a little erratic, and I suspect that
>                  Csound is the culprit.  I remember reading on this list
>                  long ago something about the uncertainty of when a MIDI
>                  event may actually go out.  I'm setting ksmps=1 in case
>                  that matters.
> 
>                  Here is some sample audio.  The score is timed correctly,
>                  the values coming from a score generator program.  I
>         believe
>                  I'm hearing imperfect timing.
> 
> 
>                  Thanks for any input.
> 
> 
>                  Tobiah
> 
>                  Csound mailing list
>         Csound@listserv.heanet.ie 
>                  >
>         https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
>         
>                           >
>                  Send bugs reports to
>         https://github.com/csound/csound/issues
>         
>                           >
>                  Discussions of bugs and features can be posted here
> 
> 
>              Csound mailing list
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>                  >
>         https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
>         
>                       >
>              Send bugs reports to
>         https://github.com/csound/csound/issues
>         
>                       >
>              Discussions of bugs and features can be posted here
> 
> 
>         Csound mailing list Csound@listserv.heanet.ie
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>                  >
>         https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
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>         reports to https://github.com/csound/csound/issues
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>         and features can be posted here
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> can be posted here

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