Having worked with (and repairing) many midi keyboard controllers, I can say 
that release velocity is not very common. Mainly available on high range 
keyboard, often with weighted keys, piano style.

Keyboard rubbers with triple sensors offer greater  definition so to have the 
release velocity, but it can be implemented in the device firmware or not, at 
manufacturer’s choice.
Keyboard rubber with double sensor could also do release velocity, but may miss 
some when the key is not fully pressed before actual release. Here, again, the 
sent message depends on firmware implementation.

>I suggest that that should only be the case when note  off velocity is 
>actually zero.
I do agree with this, it totally makes sense to me.

My 2 cents,
Raphaël


> Le 2 janv. 2022 à 13:00, Doug Gray <doug2...@gmail.com> a écrit :
> 
> For the record my Studiologic SL88 keyboard controller does send note off 
> with a measured velocity value.  I have verified this myself since the sfz 
> file I am using has key off sounds.  This velocity is measured at key release.
> I see the documentation states that the note on velocity is reused for note 
> off but I suggest that that should only be the case when note  off velocity 
> is actually zero.
> I don’t think it is likely at least for triple sensor  that ‘most midi 
> controllers’ send zero velocity note-off. It would be good to verify this.
> 
> Doug Gray
> 
>> On 2 Jan 2022, at 6:28 pm, Jan Flikweert <flk...@zeelandnet.nl> wrote:
>> 
>> JanFl. Wrote:" Thank you very much for this solution and the things I
>> learned. It works."
>> 
>> The solution does not work for gig files.
>> 
>> The funny thing is that gig files can also play a release sample after aloop
>> from a sample. The dimension is called releasetrigger. One dimension has a
>> normal loop and the release sample has no loop.
>> 
>> Kind regards,
>> 
>> 
>> Jan Fl.
>> 
>> 
>> 
>> _______________________________________________
>> Linuxsampler-devel mailing list
>> Linuxsampler-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/linuxsampler-devel
> 
> 
> _______________________________________________
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