The problem is that the printks is inside a conditional, which inhibits
any printout until the release phase of the note.  However, when it *is*
de-inhibited, it prints a line for every 1/10 second since the *beginning*
of the note!  But *not* every 1/10 of a second.  It prints once every
k-cycle. (Look at the time values in the first few lines.  They're a millisec
apart, not 1/10.  Only the final -- correctly output -- values are 1/10 sec
apart.)

There is nothing wrong wit the printf line.

(And as I noted, this didn't happen in Csound 5.19.)

	-- Pete --

On Wed, May 15, 2019 at 05:26:28PM +0100, john wrote:
> I keep reasding this and cannot see what is your problem.  printf only 
> runs when the trigger ois nt zero and different from the previos value 
> according to the manual so it appears once.  printks prints every 0.1sec 
> as you see.
> 
> 
> 
> On Wed, 8 May 2019, Pete Goodeve wrote:
> 
> >Hi,
> >
> >Following the FoF discussion, I wanted to clarify my understanding
> >of instrument duration and release under MIDI, so I made this test
> >file:
> >
> ><CsoundSynthesizer>
> ><CsOptions>
> >-m0 -d -L stdin -odac
> ></CsOptions>
> >
> ><CsInstruments>
> >sr     = 48000
> >ksmps  = 48
> >0dbfs = 1.0
> >nchnls = 2
> >
> >instr 1
> >   prints "instr start\n"
> >   itim times
> >   midinoteonkey, p4, p5    ; dummy to activate MIDI
> >   kadsr madsr 0.1, 0.2, 1.0, 0.5
> >   krel release
> >   if krel > 0 then
> >       ktim times
> >       printf "release at %f\n", krel, ktim - itim
> >       printks "ramp %f at %f\n", 0.1, kadsr, ktim - itim
> >   endif
> >endin
> >
> ></CsInstruments>
> >
> ><CsScore>
> ></CsScore>
> >
> ></CsoundSynthesizer>
> >
> >
> >The idea was to show me the time course of the extended
> >release time (with the half-second adsr). When I run it (under
> >Csound 6.12 or 6.13) I actually get this:
> >
> >instr start
> >release at 0.519000
> >ramp 1.000000 at 0.519000
> >ramp 0.998000 at 0.520000
> >ramp 0.996000 at 0.521000
> >ramp 0.994000 at 0.522000
> >ramp 0.992000 at 0.523000
> >ramp 0.990000 at 0.524000
> >ramp 0.836000 at 0.601000
> >ramp 0.636000 at 0.701000
> >ramp 0.436000 at 0.801000
> >ramp 0.236000 at 0.901000
> >ramp 0.036000 at 1.001000
> >instr start
> >release at 1.046000
> >ramp 1.000000 at 1.046000
> >ramp 0.998000 at 1.047000
> >ramp 0.996000 at 1.048000
> >ramp 0.994000 at 1.049000
> >ramp 0.992000 at 1.050000
> >ramp 0.990000 at 1.051000
> >ramp 0.988000 at 1.052000
> >ramp 0.986000 at 1.053000
> >ramp 0.984000 at 1.054000
> >ramp 0.982000 at 1.055000
> >ramp 0.980000 at 1.056000
> >ramp 0.890000 at 1.101000
> >ramp 0.690000 at 1.201000
> >ramp 0.490000 at 1.301000
> >ramp 0.290000 at 1.401000
> >ramp 0.090000 at 1.501000
> >
> >with some unexpected initial printouts -- at 1 per k-cycle --
> >before it prints the expected release ramp every 1/10 sec.
> >(If I change ksmps, the number of lines changes appropriately.)
> >
> >I went back to Csound 5, and there I just see the expected
> >printouts for the release phase only.
> >
> >I guess this is a bug?
> >
> >	-- Pete --
> >
> >
> >Csound mailing list
> >Csound@listserv.heanet.ie
> >https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> >Send bugs reports to
> >       https://github.com/csound/csound/issues
> >Discussions of bugs and features can be posted here
> >
> 
> Csound mailing list
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> Send bugs reports to
>        https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here

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