Hello, Eduardo,

Thanks a lot for your quick reply. Your example is better (than mine), but still not 100% good. A negative frequency reads the stored table backwards, but your solution of providing two sigmoid functions (raising and decaying) also works. However, in your example, for still unknown reasons to me, the decay starts right away (that is 0.8 seconds before the end of the 1" note), when I'd like that the attack AND the decay last 0.2" each, the rest having a steady amplitude, that is, the second timout (skipping the decay part of the sound until idur-iatk) does not seem to function yet.

Best,


Marco


----- Ursprüngliche Mail ----
> Von: Eduardo Moguillansky 
> An: csound@lists.bath.ac.uk
> Gesendet: Mittwoch, den 27. August 2008, 12:39:27 Uhr
> Betreff: [Csnd] Re: Timout
> 
> Hello Marco,
> 
> I might have misunderstood what you want, but if I got it right and the 
> version here is what you were looking for, then its not timout the 
> problem, but a missing kgoto and the period for the second poscil was 
> inverted. Please forgive me if this is not what you were looking for.
> 
> 
> 
> 
> 
> 
> 
> 
> 
> sr= 44100
> kr= 44100
> ksmps= 1
> nchnls= 1
> 
> 0dbfs = 32767  ; 16 bits
> 
> instr 1 ; -------------------------------------------------------------
> 
> idur= p3
> idurosc= 1/idur
> iamp = ampdbfs (p4)
> ifq= p5
> iatk= p6
> iaudiofun= 1
> isigfun= 2
> 
> timout   iatk, idur-iatk, makedecay
> 
> a2 poscil  iamp, 1/iatk, 2 ; attack
> kgoto playit
> 
> ; jump here after iatk until the end of the note
> makedecay:
> ; timout   0, idur-iatk, makedec
> a2 poscil  iamp, 1/(idur-iatk), 3
> ; and the end of the note
> 
> playit:
> a1 poscil  a2, ifq, iaudiofun
> 
>          out     a1
> endin
> 
> 
> 
> 
> 
> ; SCORE
> f1  0 4097  10  1
> ; sigmoid rise/decay
> f2 0  2049  19 .5 .5 270 .5
> ;            iamp    ifq   iatk
> i1   0   1   -6.0    1000   0.2
> 
> e
> 
> 
> 
> 
> 
> 
> Marco Stroppa wrote:
> > Hello, Csounders,
> >
> > I wonder whether someone knows how timout works, or rather, why it does not 
> seem to work properly in the short orchestra+score below.
> > In theory, I should get a tone with a sinusoidal attack and decay, but I also 
> get a crescendo during the sustained part of the note. The only documentation I 
> found on timout is the classical example from Barry Vercoe (repeating notes, 
> with reinit).
> > There are other ways to do this, of course, but I'd like to understand how 
> timout works. I'm using csound 5.08 on a MacIntel.
> > Thanks for any advice.
> >
> > Marco
> >
> >
> >
> > sr= 44100
> > kr= 44100
> > ksmps= 1
> > nchnls= 1
> >
> > 0dbfs = 32767  ; 16 bits
> >
> > instr 1 ; -------------------------------------------------------------
> >  
> > idur= p3
> > idurosc= 1/idur
> > iamp = ampdbfs (p4)
> > ifq= p5
> > iatk= p6
> > iaudiofun= 1
> > isigfun= 2
> >  
> > timout   iatk, idur-iatk, makeatk
> > a2poscil  iamp, 1/iatk, isigfun  ; sigmoid attack, active between 0 and iatk
> >
> > ; jump here after iatk until the end of the note
> > makeatk:
> > timout   0, idur-iatk, makedec
> > a2poscil  iamp, -(1/iatk), isigfun; sigmoid decay, active between idur-iatk
> >  ; and the end of the note
> > ; jump here between 0 and idur-atk
> > makedec:
> > a1poscil  a2, ifq, iaudiofun
> >
> >          out     a1
> > endin
> >
> >
> > ; SCORE
> > f1  0 4097  10  1
> > ; sigmoid rise/decay
> > f2 0  2049  19 .5 .5 270 .5
> >
> > ;            iamp    ifq   iatk
> > i1   0   1   -6.0    1000   0.2
> >
> > e
> >
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> 
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