I've crawled around a number of product manuals and discovered a variety of behaviours for note off. Some do send v=64 including some recent models (Casio Privia PXS series, Yamaha CP88, YC88 to name a few notables). On the other hand the Yamaha Arius ADP Series of console pianos send v=1-127, ie zero is not sent. I have verified this today myself on an Arius ADP-164. Some older designs send a zero velocity, possibly the lower end of the spectrum of controllers such as the Masterkey49. Unfortunately the higher profile midi keyboards such as the Kawai(VPC-1), Native Instruments, Arturia don't share the detail in their product manuals, at least not that I could find. So not as definitive as I expected.
On Wed, 5 Jan 2022 at 03:19, Christian Schoenebeck < schoeneb...@linuxsampler.org> wrote: > I changed the behaviour for both the SFZ engine and gig engine to > distinguish > by note-off velocity being exactly zero for now: > http://svn.linuxsampler.org/cgi-bin/viewvc.cgi?view=revision&revision=4020 > > That should fix expected release trigger behaviour for both keyboards with > and > without key release sensors appropriately. > > If it turns out that some MIDI keyboards with release sensors do send > note-off > velocity zero (which I doubt), then this behaviour can still be changed to > some more complicated MIDI-learn mechanism. > > BTW the original MIDI v1 specs say keyboards that do not support note-off > velocity should send 64 as note-off velocity value. Probably one of the > very > few mistakes made in the ancient MIDI specs, at least IMO. I haven't > looked > into latest MIDI v2 specs yet. I noticed though there was some voting > process > on a note-off related change on midi.org, that thread on midi.org is > password > protected though, so no idea what this was exactly about. > > CU > Christian > > On Montag, 3. Januar 2022 19:29:58 CET Raphaël Mouneyres wrote: > > thanks for the tests, it makes sense from a firmware perspective to set > > 0x01 as a minimum. > > > > I'll try to have a look at how another keyboard reacts when I have one > > at hand, probably during this week or next one, and I'll report back. > > > > Raphaël > > > > Le 03/01/2022 à 02:58, Doug Gray a écrit : > > > I have run a test on the SL-88, the lowest reported release velocity > seems > > > to be 0x01. I have tried to release keys as gently as I can but have > not > > > yet seen a release velocity of zero. It’s easy to hit the 0x01 so I’m > > > quite confident it is the lowest possible value. This was not what I > > > expected but makes good sense. > > > Doug Gray > > > > > > > > > Sent from my iPhone > > > > > >> On 3 Jan 2022, at 4:19 am, Jerash music <rmouney...@gmail.com> wrote: > > >> > > >> > > >> > > >>> Le 2 janv. 2022 à 14:53, Christian Schoenebeck > <schoeneb...@linuxsampler.org> a écrit : > > >>>> On Sonntag, 2. Januar 2022 14:42:55 CET Jerash music wrote: > > >>>> 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 > > >>> > > >>> Ok, but the core question still is: can we expect keyboards *with* > > >>> note-off > > >>> velocity sensors to *never* send note-off velocity zero? > > >> > > >> Mmm, …yes it may be possible. > > >> it may be possible to send a zero release velocity if the firmware > > >> calculates a release velocity and includes a « timeout » for the > maximum > > >> release time, and then decides that timed out values are zero. But I > > >> have not expressly tested it, and each manufacturer could have his own > > >> vision. > > >> > > >> I’ve been explained by Yamaha that the three contact rubbers are > > >> especially useful for retriggering calculation of half pressed keys, > but > > >> they did not talk about release velocity calculation. Maybe Doug Gray > > >> could try the following on his SL88 : « Release the key as slow as > > >> possible in about 4 seconds » to try to reach the minimum release > > >> velocity value. As the keyboard rubber has three contacts, it could > > >> potentially send a zero release velocity if you reach a timeout > between > > >> two contacts releases. I’m not sure if it is humanly possible to reach > > >> this potential timeout, as the contact points are really really close. > > >> The real duration of this timeout is not documented so needs testing. > > >> > > >> Raphaël > > >> > > >> _______________________________________________ > > >> Linuxsampler-devel mailing list > > >> Linuxsampler-devel@lists.sourceforge.net > > >> https://lists.sourceforge.net/lists/listinfo/linuxsampler-devel > > > > > > _______________________________________________ > > > Linuxsampler-devel mailing list > > > Linuxsampler-devel@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/linuxsampler-devel > > > > > > > _______________________________________________ > Linuxsampler-devel mailing list > Linuxsampler-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linuxsampler-devel >
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