Re: [Bluemusic-users] distorted/choppy audio output

[Darren N. <da...@cu...>]

Think I discovered the problem. My CPUs were being pegged by  
background processes. Found and killed 'em (in the Activity Monitor),  
and now the DAC is happy. :) No more choppy output.

Darren

On Nov 21, 2008, at 9:56 PM, Steven Yi wrote:

> Hi Darren,
>
> Sorry I'm a bit slow in responding to email these days but let me know
> if you come across other issues.  Otherwise, would glad to have any
> contributors to blue!
>
> steven
>
> On Tue, Nov 18, 2008 at 9:49 PM, Darren Nelsen  
> <da...@cu...> wrote:
>> Thanks, Steven, for your help off-list. Just wanted to say for the
>> list thread that my problem goes beyond blue... it's happening with
>> MacCsound and command line, so something's up with my machine. I'll
>> add more RAM and see if that helps.
>>
>> Darren
>>
>> On Nov 12, 2008, at 2:59 AM, Steven Yi wrote:
>>
>>> Hi Darren,
>>>
>>> Glad to hear you're enjoying blue!
>>>
>>> As for choppy output, I'm not sure what would cause distorted/choppy
>>> output.  Are you getting any messages about buffer underruns?  This
>>> shouldn't happen in rendering to disk though.
>>>
>>> If you would, could you generate a CSD to disk, then render to that
>>> CSD with csound via commandline and see what the output sounds like?
>>> If you get distortions or choppiness that way, then it would be a
>>> problem with the project or csound, and not blue.
>>>
>>> What are you using for sr and ksmps?
>>>
>>> Do you have an example project you could send?
>>>
>>> Otherwise, maybe someone who uses OSX may have some ideas, as I do  
>>> not
>>> currently have access to an OSX machine.
>>>
>>> steven
>>>
>>> On Tue, Nov 11, 2008 at 7:49 PM, Darren Nelsen
>>> <da...@cu...> wrote:
>>>> Hi. I'm new to blue and this list. In learning blue, I find it to  
>>>> be
>>>> an *amazing* complement to csound, really taking csound (or at  
>>>> least
>>>> working with it) into whole new territories. I love the  
>>>> soundObjects,
>>>> Instrument Library, timeline, Mixer... and I'm sure I'll love  
>>>> more as
>>>> I learn more.
>>>>
>>>> One problem though... often when playing, the audio output is
>>>> distorted and choppy. Sometimes, I have to start and stop several
>>>> times in order to get clean output. My levels are good, no samples
>>>> out
>>>> of range. All my apps are shutdown except for blue. This happens  
>>>> even
>>>> when rendering to disk.
>>>>
>>>> I don't have this problem with MacCsound. I can run output in real-
>>>> time with no distortion or noise.
>>>>
>>>> I'm on a Dual 2.5 GHz PowerPC G5 with 4 GB of RAM. Mac OS X 10.5.5
>>>> running Csound 5.09.
>>>>
>>>> I have this problem in blue with both Csound 5.08 and 5.09.
>>>>
>>>> I've tried changing from PortAudio to CoreAudio and that seemed to
>>>> help a little bit.
>>>>
>>>> Any suggestions?
>>>>
>>>> Thanks.
>>>>
>>>> Darren
>>>>
>>>>
>>>> -------------------------------------------------------------------------
>>>> This SF.Net email is sponsored by the Moblin Your Move Developer's
>>>> challenge
>>>> Build the coolest Linux based applications with Moblin SDK & win
>>>> great prizes
>>>> Grand prize is a trip for two to an Open Source event anywhere in
>>>> the world
>>>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>>>> _______________________________________________
>>>> Bluemusic-users mailing list
>>>> Blu...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/bluemusic-users
>>>>
>>>
>>> -------------------------------------------------------------------------
>>> This SF.Net email is sponsored by the Moblin Your Move Developer's
>>> challenge
>>> Build the coolest Linux based applications with Moblin SDK & win
>>> great prizes
>>> Grand prize is a trip for two to an Open Source event anywhere in
>>> the world
>>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>>> _______________________________________________
>>> Bluemusic-users mailing list
>>> Blu...@li...
>>> https://lists.sourceforge.net/lists/listinfo/bluemusic-users
>>>
>>
>>
>> -------------------------------------------------------------------------
>> This SF.Net email is sponsored by the Moblin Your Move Developer's  
>> challenge
>> Build the coolest Linux based applications with Moblin SDK & win  
>> great prizes
>> Grand prize is a trip for two to an Open Source event anywhere in  
>> the world
>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> _______________________________________________
>> Bluemusic-users mailing list
>> Blu...@li...
>> https://lists.sourceforge.net/lists/listinfo/bluemusic-users
>>
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's  
> challenge
> Build the coolest Linux based applications with Moblin SDK & win  
> great prizes
> Grand prize is a trip for two to an Open Source event anywhere in  
> the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> Bluemusic-users mailing list
> Blu...@li...
> https://lists.sourceforge.net/lists/listinfo/bluemusic-users
>