Re: [Sc-devel] Shaper crash

[Josh Parmenter <josh@xxxxxxxxxxxxxxxxx>]

great. I'll take a look at it tomorrow. I think I know why there is   
problem.

josh

On Dec 6, 2007, at 6:32 PM, kernel wrote:

> i was clipping the input to 1.0 - 0.0001.  anything larger than that  
> still seems to cause the crash.. quite curious about that.  the .kr  
> version seems to be a different beast and clipping the same way  
> didn't seem to work, although i didn't have time to interpret the  
> code properly.
>
>
> On 7 Dec 2007, at 02:00, Josh Parmenter wrote:
>
> > Will do
> >
> > Josh
> > On Dec 6, 2007, at 5:57 PM, James McCartney wrote:
> >
> > > clip, don't wrap.
> > >
> > > On Dec 6, 2007 5:42 PM, Josh Parmenter <josh@xxxxxxxxxxxxxxxxx>  
> > > wrote:
> > > > Hmm... not sure if I would clip the value, or perhaps wrap it? I  
> > > > think
> > > > a comment in the helpfile makes sense at least. I'll add this in,  
> > > > and
> > > > if others have ideas about the way it should work, let me know  
> > > > and I
> > > > will commit a fix.
> > > >
> > > > best,
> > > >
> > > > Josh
> > > >
> > > >
> > > > On Dec 6, 2007, at 5:08 PM, kernel wrote:
> > > >
> > > > > hi, i've noticed Shaper causes a segmentation fault if the input  
> > > > > is
> > > > > equal to or rises above 1.0.  eg:
> > > > >
> > > > > (
> > > > > c = Buffer.alloc(s, 8192, 1, {arg buf; buf.sine1Msg([1])});
> > > > > {Shaper.ar(c.bufnum,SinOsc.ar(100,0,Line.ar(0,2,5)))}.play;
> > > > > )
> > > > >
> > > > > admittedly it's common practice to keep the input quite low but
> > > > > maybe we could note this in the help file.  I did manage to make a
> > > > > rudimentary fix in the UGen code that clips the input to a value
> > > > > close to 1.0 although it only works for the .ar version.  i've not
> > > > > had time to figure out the .kr version.  the fix is commented out
> > > > > here:
> > > > >
> > > > > LOOP(inNumSamples,
> > > > > float fin = ZXP(in);
> > > > > // fin = sc_min(fin, 1.0 - 0.0001); // stops seg fault
> > > > > float findex = offset + fin * offset;
> > > > > ..
> > > > >
> > > > > perhaps i'm just fussing anyway.
> > > > >
> > > > > kernel
> > > > > _______________________________________________
> > > > > Sc-devel mailing list
> > > > > Sc-devel@xxxxxxxxxxxxxxx
> > > > > http://www.create.ucsb.edu/mailman/listinfo/sc-devel
> > > >
> > > > ******************************************
> > > > /* Joshua D. Parmenter
> > > > http://www.realizedsound.net/josh/
> > > >
> > > > "Every composer – at all times and in all cases – gives his own
> > > > interpretation of how modern society is structured: whether  
> > > > actively
> > > > or passively, consciously or unconsciously, he makes choices in  
> > > > this
> > > > regard. He may be conservative or he may subject himself to  
> > > > continual
> > > > renewal; or he may strive for a revolutionary, historical or social
> > > > palingenesis." - Luigi Nono
> > > > */
> > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > Sc-devel mailing list
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> > > > http://www.create.ucsb.edu/mailman/listinfo/sc-devel
> > >
> > >
> > >
> > > --
> > > --- james mccartney
> > >
> > > _______________________________________________
> > > Sc-devel mailing list
> > > Sc-devel@xxxxxxxxxxxxxxx
> > > http://www.create.ucsb.edu/mailman/listinfo/sc-devel
> >
> > ******************************************
> > /* Joshua D. Parmenter
> > http://www.realizedsound.net/josh/
> >
> > “Every composer – at all times and in all cases – gives his own  
> > interpretation of how modern society is structured: whether  
> > actively or passively, consciously or unconsciously, he makes  
> > choices in this regard. He may be conservative or he may subject  
> > himself to continual renewal; or he may strive for a revolutionary,  
> > historical or social palingenesis." - Luigi Nono
> > */
> >
> >
> > _______________________________________________
> > Sc-devel mailing list
> > Sc-devel@xxxxxxxxxxxxxxx
> > http://www.create.ucsb.edu/mailman/listinfo/sc-devel
>
>
> _______________________________________________
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> http://www.create.ucsb.edu/mailman/listinfo/sc-devel

******************************************
/* Joshua D. Parmenter
http://www.realizedsound.net/josh/

“Every composer – at all times and in all cases – gives his own  
interpretation of how modern society is structured: whether actively  
or passively, consciously or unconsciously, he makes choices in this  
regard. He may be conservative or he may subject himself to continual  
renewal; or he may strive for a revolutionary, historical or social  
palingenesis." - Luigi Nono
*/