I'm attempting to use Csound 6 on my MacBook Pro (10.8.5) to send audio to
the ADAT lightpipe outputs of a PreSonus 1818VSL. I've set nchnls=18, and
I'm using outch:

outch     11, asigL, 12, asigR

This sometimes hangs Csound. (It can also hang when I use Run In Term.) It
hangs pretty consistently with pa_bl, but pa_cb seems more stable. It's
working at the moment, anyhow....

I'd like very much to hear what kind of performance (successes or problems)
other people are having in MacOS when using an interface that has lots of
I/O channels. My goal is to turn my MacBook into a euro-rack modular module
running Csound, using the PreSonus's lightpipe ports to communicate with
Expert Sleepers ES-3 and ES-6 modules. Success so far is mixed.



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Very briefly, I've used multichannel audio routinely under windows for
many years and also occasionally under MacOs. No specific roadblocks
regarding performance.
I think that there is a small extra computational cost when running
multichannel output, might be noticeable for > 10 channels when
compared to simple stereo. Nothing big really, but perhaps noticeable.
When experiencing strange problems (like this one you have), I'd say
it might be a good idea to run csound directly in the terminal, just
to minimize the potential causes of confusion. Once you've sorted it
out, it should be relatively straightforward to go back to using the
frontend.
best
Oeyvind

2013/12/21 Jim Aikin :
> I'm attempting to use Csound 6 on my MacBook Pro (10.8.5) to send audio to
> the ADAT lightpipe outputs of a PreSonus 1818VSL. I've set nchnls=18, and
> I'm using outch:
>
> outch     11, asigL, 12, asigR
>
> This sometimes hangs Csound. (It can also hang when I use Run In Term.) It
> hangs pretty consistently with pa_bl, but pa_cb seems more stable. It's
> working at the moment, anyhow....
>
> I'd like very much to hear what kind of performance (successes or problems)
> other people are having in MacOS when using an interface that has lots of
> I/O channels. My goal is to turn my MacBook into a euro-rack modular module
> running Csound, using the PreSonus's lightpipe ports to communicate with
> Expert Sleepers ES-3 and ES-6 modules. Success so far is mixed.
>
>
>
> --
> View this message in context: http://csound.1045644.n5.nabble.com/Multichannel-Audio-on-MacOS-tp5730912.html
> Sent from the Csound - General mailing list archive at Nabble.com.
>
>
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>             https://sourceforge.net/p/csound/tickets/
> csound5:
>             https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>
>



-- 

Oeyvind Brandtsegg
Professor of Music Technology
NTNU
7491 Trondheim
Norway
Cell: +47 92 203 205

http://flyndresang.no/
http://www.partikkelaudio.com/
http://soundcloud.com/brandtsegg
http://soundcloud.com/t-emp

What about coreaudio/auhal?

On 21 Dec 2013, at 22:56, Jim Aikin wrote:

> I'm attempting to use Csound 6 on my MacBook Pro (10.8.5) to send audio to
> the ADAT lightpipe outputs of a PreSonus 1818VSL. I've set nchnls=18, and
> I'm using outch:
> 
> outch     11, asigL, 12, asigR
> 
> This sometimes hangs Csound. (It can also hang when I use Run In Term.) It
> hangs pretty consistently with pa_bl, but pa_cb seems more stable. It's
> working at the moment, anyhow....
> 
> I'd like very much to hear what kind of performance (successes or problems)
> other people are having in MacOS when using an interface that has lots of
> I/O channels. My goal is to turn my MacBook into a euro-rack modular module
> running Csound, using the PreSonus's lightpipe ports to communicate with
> Expert Sleepers ES-3 and ES-6 modules. Success so far is mixed.
> 
> 
> 
> --
> View this message in context: http://csound.1045644.n5.nabble.com/Multichannel-Audio-on-MacOS-tp5730912.html
> Sent from the Csound - General mailing list archive at Nabble.com.
> 
> 
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>            https://sourceforge.net/p/csound/tickets/
> csound5:
>            https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
> 
> 

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie

> What about coreaudio/auhal?

auhal is unable to open the dac on the 1818VSL. It doesn't hang Csound, it
just won't work at all.



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That's interesting, what is the message? Does the device get listed at all?
What happens if you set the 1818VSL as your main sound output in the
system preferences, and then use -odac (with no dev number)?


Victor
On 22 Dec 2013, at 18:36, Jim Aikin wrote:

>> What about coreaudio/auhal?
> 
> auhal is unable to open the dac on the 1818VSL. It doesn't hang Csound, it
> just won't work at all.
> 
> 
> 
> --
> View this message in context: http://csound.1045644.n5.nabble.com/Multichannel-Audio-on-MacOS-tp5730912p5730916.html
> Sent from the Csound - General mailing list archive at Nabble.com.
> 
> 
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>            https://sourceforge.net/p/csound/tickets/
> csound5:
>            https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
> 
> 

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie

and what about Jack?
On 22 Dec 2013, at 19:08, Victor Lazzarini wrote:

> That's interesting, what is the message? Does the device get listed at all?
> What happens if you set the 1818VSL as your main sound output in the
> system preferences, and then use -odac (with no dev number)?
> 
> 
> Victor
> On 22 Dec 2013, at 18:36, Jim Aikin wrote:
> 
>>> What about coreaudio/auhal?
>> 
>> auhal is unable to open the dac on the 1818VSL. It doesn't hang Csound, it
>> just won't work at all.
>> 
>> 
>> 
>> --
>> View this message in context: http://csound.1045644.n5.nabble.com/Multichannel-Audio-on-MacOS-tp5730912p5730916.html
>> Sent from the Csound - General mailing list archive at Nabble.com.
>> 
>> 
>> Send bugs reports to the Sourceforge bug trackers
>> csound6:
>>           https://sourceforge.net/p/csound/tickets/
>> csound5:
>>           https://sourceforge.net/p/csound/bugs/
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>> 
>> 
> 
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
> 
> 
> 
> 
> 
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>            https://sourceforge.net/p/csound/tickets/
> csound5:
>            https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
> 
> 

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie

> That's interesting, what is the message? Does the device get listed at all?
> What happens if you set the 1818VSL as your main sound output in the
> system preferences, and then use -odac (with no dev number)? 

The PreSonus is listed in the Configuration pop-up, yes. When I try to run
the .csd, the Console reports:

isfinit: cannot open dac3

I'll test the other option later.





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That message is to do with input, so it seems to be a problem opening input rather than output.
On 22 Dec 2013, at 21:22, Jim Aikin wrote:

>> That's interesting, what is the message? Does the device get listed at all?
>> What happens if you set the 1818VSL as your main sound output in the
>> system preferences, and then use -odac (with no dev number)? 
> 
> The PreSonus is listed in the Configuration pop-up, yes. When I try to run
> the .csd, the Console reports:
> 
> isfinit: cannot open dac3
> 
> I'll test the other option later.
> 
> 
> 
> 
> 
> --
> View this message in context: http://csound.1045644.n5.nabble.com/Multichannel-Audio-on-MacOS-tp5730912p5730920.html
> Sent from the Csound - General mailing list archive at Nabble.com.
> 
> 
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>            https://sourceforge.net/p/csound/tickets/
> csound5:
>            https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
> 
> 

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie

Actually this looks like a bug in CsoundQT. Try unselecting "use CsoundQT options" in realtime audio configurations, and
adding -odac3 -iadc3 -+rtaudio=auhal in the CsOptions of the CSD file.

When I tried it here to use dac3 in the csoundqt configuration, I got the same error as you did, but in CsOptions, it worked.

Victor

On 22 Dec 2013, at 22:12, Victor Lazzarini wrote:

> That message is to do with input, so it seems to be a problem opening input rather than output.
> On 22 Dec 2013, at 21:22, Jim Aikin wrote:
> 
>>> That's interesting, what is the message? Does the device get listed at all?
>>> What happens if you set the 1818VSL as your main sound output in the
>>> system preferences, and then use -odac (with no dev number)? 
>> 
>> The PreSonus is listed in the Configuration pop-up, yes. When I try to run
>> the .csd, the Console reports:
>> 
>> isfinit: cannot open dac3
>> 
>> I'll test the other option later.
>> 
>> 
>> 
>> 
>> 
>> --
>> View this message in context: http://csound.1045644.n5.nabble.com/Multichannel-Audio-on-MacOS-tp5730912p5730920.html
>> Sent from the Csound - General mailing list archive at Nabble.com.
>> 
>> 
>> Send bugs reports to the Sourceforge bug trackers
>> csound6:
>>           https://sourceforge.net/p/csound/tickets/
>> csound5:
>>           https://sourceforge.net/p/csound/bugs/
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>> 
>> 
> 
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
> 
> 
> 
> 
> 
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>            https://sourceforge.net/p/csound/tickets/
> csound5:
>            https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
> 
> 

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie

The bug seems to affect input only, so if you leave the input device blank or just "dac", you should be able to select any output.
On 22 Dec 2013, at 22:27, Victor Lazzarini wrote:

> Actually this looks like a bug in CsoundQT. Try unselecting "use CsoundQT options" in realtime audio configurations, and
> adding -odac3 -iadc3 -+rtaudio=auhal in the CsOptions of the CSD file.
> 
> When I tried it here to use dac3 in the csoundqt configuration, I got the same error as you did, but in CsOptions, it worked.
> 
> Victor
> 
> On 22 Dec 2013, at 22:12, Victor Lazzarini wrote:
> 
>> That message is to do with input, so it seems to be a problem opening input rather than output.
>> On 22 Dec 2013, at 21:22, Jim Aikin wrote:
>> 
>>>> That's interesting, what is the message? Does the device get listed at all?
>>>> What happens if you set the 1818VSL as your main sound output in the
>>>> system preferences, and then use -odac (with no dev number)? 
>>> 
>>> The PreSonus is listed in the Configuration pop-up, yes. When I try to run
>>> the .csd, the Console reports:
>>> 
>>> isfinit: cannot open dac3
>>> 
>>> I'll test the other option later.
>>> 
>>> 
>>> 
>>> 
>>> 
>>> --
>>> View this message in context: http://csound.1045644.n5.nabble.com/Multichannel-Audio-on-MacOS-tp5730912p5730920.html
>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>> 
>>> 
>>> Send bugs reports to the Sourceforge bug trackers
>>> csound6:
>>>          https://sourceforge.net/p/csound/tickets/
>>> csound5:
>>>          https://sourceforge.net/p/csound/bugs/
>>> Discussions of bugs and features can be posted here
>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>>> 
>>> 
>> 
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>> 
>> 
>> 
>> 
>> 
>> Send bugs reports to the Sourceforge bug trackers
>> csound6:
>>           https://sourceforge.net/p/csound/tickets/
>> csound5:
>>           https://sourceforge.net/p/csound/bugs/
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>> 
>> 
> 
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
> 
> 
> 
> 
> 
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>            https://sourceforge.net/p/csound/tickets/
> csound5:
>            https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
> 
> 

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie

> Actually this looks like a bug in CsoundQT. Try unselecting "use CsoundQT
> options" in realtime audio configurations, and
> adding -odac3 -iadc3 -+rtaudio=auhal in the CsOptions of the CSD file.

> When I tried it here to use dac3 in the csoundqt configuration, I got the
> same
> error as you did, but in CsOptions, it worked. 

I get the same error as before. (And yes, I did uncheck "use CsoundQt
options".) Also, possibly relevant or not, the input ADC is 3, but the
output is 2. If I use pa_cb, they're 2 and 1 respectively.



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It still looks like CsoundQT is using its options ("dac3" being selected instead of "adc3", which you
have asked for in CsOptions).

I know there is a build with a bug where CsoundQT options are never switched off and CsOptions cannot be used properly.

The bug in CsoundQT is that it is setting "dac3" as an input device, when it should be "adc3" instead. So you could type
these into the configuration window: "adc3" (for input) and "dac2" (for output). That will work.

The device list may be different between devices.  That is not an issue.

Victor

On 23 Dec 2013, at 01:44, Jim Aikin wrote:

>> Actually this looks like a bug in CsoundQT. Try unselecting "use CsoundQT
>> options" in realtime audio configurations, and
>> adding -odac3 -iadc3 -+rtaudio=auhal in the CsOptions of the CSD file.
> 
>> When I tried it here to use dac3 in the csoundqt configuration, I got the
>> same
>> error as you did, but in CsOptions, it worked. 
> 
> I get the same error as before. (And yes, I did uncheck "use CsoundQt
> options".) Also, possibly relevant or not, the input ADC is 3, but the
> output is 2. If I use pa_cb, they're 2 and 1 respectively.
> 
> 
> 
> --
> View this message in context: http://csound.1045644.n5.nabble.com/Multichannel-Audio-on-MacOS-tp5730912p5730924.html
> Sent from the Csound - General mailing list archive at Nabble.com.
> 
> 
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>            https://sourceforge.net/p/csound/tickets/
> csound5:
>            https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
> 
> 

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie

The problem with such a correction is not all a-rate args are x-rate
args IIRC. Opcodes like oscil and crossfm have x-args only because
there is a flag to tell the difference (at compile time of the orc
AFAIK). ...Or am I missing something?

On 12/23/13, Aurelius Prochazka  wrote:
> I don’t know that I agree.  If the delay were a constant there would be no
> artifacts. k-rate might produce artifacts, but so could discontinuous a-rate
> linsegs.  The similar opcode wguide1 has the inverse of delay time as an
> x-rate parameter.  Ideally the flanger opcode would be made more general,
> but for now I’ll just correct the documentation and submit the rewrite to
> git.
>
> Aure
>
> Sent from my iPhone
> Sent with Sparrow (http://www.sparrowmailapp.com/?sig)
>
>
> On Monday, December 23, 2013 at 3:04 PM, Victor.Lazzarini@nuim.ie wrote:
>
>> It should be audio rate to avoid artefacts. The modulator can be anything
>> that produces an audio signal in the correct range, so the page is not
>> wrong, perhaps a bit incomplete.
>>
>> ----- Original Message -----
>> From: Aurelius Prochazka 
>> Date: Monday, December 23, 2013 10:16 pm
>> Subject: [Csnd] flanger opcode
>> To: csound@lists.bath.ac.uk (mailto:csound@lists.bath.ac.uk)
>>
>> > In the manual for flanger:
>> >
>> > http://www.csounds.com/manual/html/flanger.html
>> >
>> > it claims that “the delay must be varied at a-rate connecting adel to an
>> > oscillator output” but the example shown does not do that and instead
>> > uses a linseg with an audio rate output.  Is there any reason why delay
>> > time is forced to be audio rate?  Couldn’t there be a syntax that allows
>> > for control rate delay times as well?  At very least, I think the
>> > manual’s description of the delay is wrong, but I wanted to ask the
>> > community if I am misunderstanding how the flanger works.
>> >
>> > Thanks,
>> > Aure
>>
>>
>> Dr Victor Lazzarini, Senior Lecturer, Dept. of Music,
>> National University of Ireland, Maynooth
>
>
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>             https://sourceforge.net/p/csound/tickets/
> csound5:
>             https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"
>
>
>

did you try to set your default audio card in the system preferences 
("sound": both input and output), and then only using -adc and -dac in 
csound or csoundqt? this is usually the preferable method, in my opinion.

	joachim


Am 23.12.2013 02:44, schrieb Jim Aikin:
>> Actually this looks like a bug in CsoundQT. Try unselecting "use CsoundQT
>> options" in realtime audio configurations, and
>> adding -odac3 -iadc3 -+rtaudio=auhal in the CsOptions of the CSD file.
>
>> When I tried it here to use dac3 in the csoundqt configuration, I got the
>> same
>> error as you did, but in CsOptions, it worked.
>
> I get the same error as before. (And yes, I did uncheck "use CsoundQt
> options".) Also, possibly relevant or not, the input ADC is 3, but the
> output is 2. If I use pa_cb, they're 2 and 1 respectively.
>
>
>
> --
> View this message in context: http://csound.1045644.n5.nabble.com/Multichannel-Audio-on-MacOS-tp5730912p5730924.html
> Sent from the Csound - General mailing list archive at Nabble.com.
>
>
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>              https://sourceforge.net/p/csound/tickets/
> csound5:
>              https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>
>
>