[Pd] csoundapi~ issues

[Martin Peach]

Chuckk Hubbard wrote:
> So does it go for hours now?

It ran for a few hours before I went to bed :) but I don't yet know if 
the system freezes when the dummy note ends.

> If you were doing it that way, too, couldn't you set it so a note of a
> certain duration retriggered the same instrument after that duration -
> 1 second or something?  Although for an installation it would seem
> like this would cause some overlapping weirdness.

I could always reinitialize csound periodically, but that would glitch 
anything that was running and might expose memory leaks.

> Maybe two identical instruments that trigger events in each other
> immediately upon shutting off.  I don't know, but let us know if you
> solve it.

Well I did solve it, more or less, by using a very long duration dummy 
instrument, i.e. duration like 2147483647 instead of -1.

Martin

> 
> On 3/31/06, Martin Peach <martinrp at vax2.concordia.ca> wrote:
> 
>>Mathieu Bouchard wrote:
>>
>>>On Wed, 29 Mar 2006, Martin Peach wrote:
>>>
>>>
>>>
>>>>Cool. Maybe you can let me know if you get anything to run longer than 1
>>>>hour. I always get system freezes at exactly 3600 seconds.
>>>
>>>
>>>Hi. The SoundBlaster clock runs at about 1193 kHz. that's 2**32
>>>ticks/hour. Maybe it's an overflow bug?
>>
>>Yes it might be...I was using what I thought was an always-on instrument
>>(duration of -1), but I think this just holds the note until something
>>overflows.
>>I fixed it by changing the duration of the dummy note from -1 to a huge
>>number less than 2^31 - 1, since apparently a csound score can't last
>>more than that many beats since it's counting with a 32-bit signed
>>number. That gives about 68 years...
>>Maybe also changing the tempo could give longer times since the beats
>>default to 1 second but could be longer.
>>
>>Martin
>>
>>
>>
>>> _ _ __ ___ _____ ________ _____________ _____________________ ...
>>>| Mathieu Bouchard - tél:+1.514.383.3801 - http://artengine.ca/matju
>>>| Freelance Digital Arts Engineer, Montréal QC Canada
>>>
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>>
>>
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> 
> 
> 
> --
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> -Friedrich Nietzsche, "Thus Spoke Zarathustra"
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