at a guess ...

i suggest there is some sort of reinitialisation happening that can either
be bypassed with tie / negative p3 combinations ...

http://csoundjournal.com/2005fall/tiedNotes.html

or passing the appropriate "skip reinit" message to the relevant opcode
parameter (if it has such a parameter ...) ... i.e. your table reader or
phasor or whatever it is paying the sample ...






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Hi Roger,

I tend to use xtratim + release together with custom envelope
generators these days, but any of the -r envelope generator opcodes
should work well:

http://csound.github.io/docs/manual/linsegr.html
http://csound.github.io/docs/manual/expsegr.html
http://csound.github.io/docs/manual/transegr.html
http://csound.github.io/docs/manual/madsr.html
http://csound.github.io/docs/manual/mxadsr.html

Of these, I liked using transegr in the past so that one could have
linear or convex kind of attack and exponential/concave decay and
release. I'd probably try madsr and mxadsr first, which should solve
your click problem, then work out which envelope generators works best
for you.

All best!
steven





On Mon, Aug 28, 2017 at 4:33 PM, Roger Kelly  wrote:
> Does anyone have a recommendation for how to handle a "key release"/Note off
> when playing a sample?
>
> Everything seems to cause an audible "click" when the key release happens.
> I tried xtratim with lots of various line, linen, etc.
>
>
> 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

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ahh ... 

random thought. i have also had problems getting envelopes to close out
properly if i haven't completed the termination slightly prior to the actual
p3 time ... 

i.e. allowing at least 1 kr cycle for the envelope to completely resolve its
trajectory (perhaps there can be minor float-type errors or something ...)

'terminate slightly early' is always a general principle i follow now with
terminating envelopes ... & then extend the final 0 at the end for the 0.005
secs or so just to be safe & ensure 'full closure' ...

again, another reason i prefer to have separate note on / note off response
management via midiin opcode, transmitting to a second instrument with:
* negative p3 duration on note on, & 
* fixed release time with tied event management for note off ... 

(i apologise, that particular application of negative p3 & tiestatus i don't
think is actually spelled out in Stevens article from 2006 ... but the
mechanism for implementing the tie & goto command sequence is ...)







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