[PD] MIDI / STATUS_BYTE / noteOn - noteOff mesage

Tue Oct 4 06:59:12 CEST 2022

Yes but RolI seaboard and linnstrument have polyphonic aftertouch, in fact
they even have three expressive parameters per note. Pressure, X and Y
axis. Since there is only one message per note available (polyphonic
aftertouch) in standard MIDI, MPE was born to allow for polyphonic
Pitchbend for example (each note potentially in different directions and at
a different level)

there is not really anything to implement MPE wise, it is still standard
MIDI messages, general modulation takes places on channel 1 and per note
modulation is done with CC messages that are sent on Channel 2-16, in
accordance to each new note that is played, that also gets a channel from 2
to 16 assigned in a round robin fashion (or other logic of you prefer).

And yes, that means your limited to 15 voices.

So some route objects should work wonders :)

On Tue, 4 Oct 2022, 01:54 Alexandre Torres Porres, <porres at gmail.com> wrote:

> I was talking more about polyphonic aftertouch than rel velocity.
>
> btw, Pd still needs implementations for MPE right?
>
> Em seg., 3 de out. de 2022 às 01:42, Simon Iten <itensimon at gmail.com>
> escreveu:
>
>> Roli seaboard, linnstrument. Don't know if those have noteoff velocity,
>> but they sure have MPE
>>
>> On Mon, 3 Oct 2022, 00:39 Alexandre Torres Porres, <porres at gmail.com>
>> wrote:
>>
>>>
>>>
>>> Em dom., 2 de out. de 2022 às 16:56, Simon Iten <itensimon at gmail.com>
>>> escreveu:
>>>
>>>> there are “plenty” of polyphonic aftertouch controllers on the market,
>>>> some of the newer MPE hardware controllers use CC messages for this though.
>>>> (https://www.midi.org/midi-articles/midi-polyphonic-expression-mpe).
>>>> some of them also have release velocity.
>>>>
>>>
>>> examples of such controllers please?
>>>
>>>
>>>
>>>> there are also quite some softsynths that handle release velocity (
>>>> https://vital.audio  for a free example), so i would not exactly say
>>>> this is that rare. and also it will get more common again i guess.
>>>>
>>>>
>>>>
>>>> On 1 Oct 2022, at 15:36, Alexandre Torres Porres <porres at gmail.com>
>>>> wrote:
>>>>
>>>> Cool, but not a 'classic keyboard' controller. I don't know any modern
>>>> one with release velocity, and also with polyphonic aftertouch (at least a
>>>> decent/proper one that is not a pad and actually uses pressure after you
>>>> press the note).
>>>> cheers
>>>>
>>>> Em sex., 30 de set. de 2022 às 17:09, Peter Brinkmann <
>>>> peter.brinkmann at googlemail.com> escreveu:
>>>>
>>>>> There's a new controller that uses Note Off velocity in an interesting
>>>>> way --- the Artinoise re.corder
>>>>> <https://www.recorderinstruments.com/en/> sends Note Off with nonzero
>>>>> velocity between slurred notes.
>>>>>
>>>>> On Fri, Sep 30, 2022 at 9:30 AM Alexandre Torres Porres <
>>>>> porres at gmail.com> wrote:
>>>>>
>>>>>> Hi, the ELSE library has [else/note.in] and [else/note.out] which
>>>>>> can handle proper note off messages. There's an object in cyclone (and also
>>>>>> in MAX, of course) that can do that too, called [cyclone/xnotein] and
>>>>>> [cyclone/xnoteout].
>>>>>>
>>>>>> The use case of this is very rare as modern controllers don't really
>>>>>> send note off messages anymore. I bought an old controller from the 80s
>>>>>> that can do this, cause I'm a nerd and gear slut.
>>>>>>
>>>>>> Note Off messages start with channel messages from 128 to 143 (128
>>>>>> being channel 1 up to 143 being channel 16) as Dan's test patch points out.
>>>>>> You can use raw midi input from vanilla to listen to this and get the next
>>>>>> two values which are MIDI note and release velocity.
>>>>>>
>>>>>> I would also like this to be available in vanilla, but, hey, well,
>>>>>> there are the mentioned externals already and this is quite rare as I
>>>>>> pointed out. If you need to do it as a pure vanilla application for
>>>>>> whatever reason, you can create such abstraction with [midiin].
>>>>>>
>>>>>> cheers
>>>>>>
>>>>>> Em qui., 29 de set. de 2022 às 19:19, Dan Wilcox <
>>>>>> danomatika at gmail.com> escreveu:
>>>>>>
>>>>>>> Pd treats noteoff as a noteon with 0 velocity, hence the [stripnote]
>>>>>>> object, etc.
>>>>>>>
>>>>>>> If you want to explicitly handle noteoff, you can look at the midi
>>>>>>> tester patch for working with raw bytes...
>>>>>>>
>>>>>>> 1. Help -> Browser...
>>>>>>> 2. Pure Data / 7.stuff / tools / miditester.pd
>>>>>>> 3. receive [pd channel messages]
>>>>>>>
>>>>>>> On Sep 27, 2022, at 9:56 PM, pd-list-request at lists.iem.at wrote:
>>>>>>>
>>>>>>> Message: 2
>>>>>>> Date: Tue, 27 Sep 2022 17:42:15 +0200
>>>>>>> From: Lorenzo Sutton <lorenzofsutton at gmail.com>
>>>>>>> To: pd-list at lists.iem.at
>>>>>>> Subject: Re: [PD] MIDI / STATUS_BYTE / noteOn - noteOff mesage
>>>>>>> Message-ID: <b3832427-9b6d-ea0e-3d34-82245176e5ba at gmail.com>
>>>>>>> Content-Type: text/plain; charset=UTF-8; format=flowed
>>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> On 26/09/2022 20:43, Maurin Donneaud wrote:
>>>>>>>
>>>>>>> Dear List
>>>>>>>
>>>>>>> Looking at the MIDI 1.0 documentation :
>>>>>>>
>>>>>>> https://www.midi.org/specifications-old/item/table-2-expanded-messages-list-status-bytes
>>>>>>>
>>>>>>> I notice that the MIDI NOTES are transmitted over three bytes
>>>>>>> ??? byte 1 -> STATUS_BYTE [chan & function]
>>>>>>> ??? byte 2 -> DATA_BYTE [note] (0-127)
>>>>>>> ??? byte 3 -> DATA_BYTE [velocity] (0-127)
>>>>>>>
>>>>>>> I'm wandering if Pd have a simple object to extract the noteOn /
>>>>>>> noteOff
>>>>>>> message from the STATUS_BYTE.
>>>>>>>
>>>>>>>
>>>>>>> I think you should be able with [midiin].
>>>>>>>
>>>>>>> Note that as per MIDI spec, 'note off' can be either an explicit
>>>>>>> 'note
>>>>>>> off' message also containing a 'release velocity' value or (more
>>>>>>> common)
>>>>>>> a note on with velocity equal to zero (for example this is how Pd
>>>>>>> does a
>>>>>>> note on/off if you use the [makenote] object.
>>>>>>>
>>>>>>> Lorenzo
>>>>>>>
>>>>>>>
>>>>>>> --------
>>>>>>> Dan Wilcox
>>>>>>> @danomatika <http://twitter.com/danomatika>
>>>>>>> danomatika.com
>>>>>>> robotcowboy.com
>>>>>>>
>>>>>>>
>>>>>>>
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