yap, I know that at the end of the day MIDI is dealing with 1 byte at time. I was wondering why there's a difference between 2 different piece of code that generates MIDI (Pd and Hardware synth).

for example I just monitored (via USB) my Novation Circuit (a groovebox) and Gmidimonitor receives messages 81 bytes long. with Pd as I said is always 1 byte.

now my question would be, how is this possible?

I'm sure Circuit sends sysex 81 bytes long, so I know that this is correct, but still I don't know why Pd doesn't allow something like that.



On 02/22/2018 09:58 PM, Alex wrote:
MIDI is a serial protocol, individual bits running down a single line, we now also have USB midi which is a little bit different than that but usually that is abstracted for you. The software monitor you're using likely groups these for you but in reality you simply have a stream of individual bits on the hardware line..
PD's object let you do bytes at a time instead of individual bits :)

On Thu, Feb 22, 2018 at 1:47 PM, mario buoninfante <mario.buoninfa...@gmail.com <mailto:mario.buoninfa...@gmail.com>> wrote:

    Hi Alex,

    thanks for your reply. I think that also using your abstraction Pd
    will spit out 1 byte per time (I didn't check it, but I assume
    that cause it's not an external in C).

    about MIDI if I'm not wrong, bytes are grouped in accord with the
    type of message, ie Note on/off and CC are 3 bytes messages,
    channel pressure and program change are 2 bytes, sysex have
    variable length and so on. and I presume they're sent out in group.

    in fact when I monitor MIDI messages coming for certain
    applications (I'm on Linux and I'm using Gmidimonitor) the console
    tells me the sysex size in bytes. so, with Pd the size is always 1
    byte, but with other programming languages and softwares is
    variable and goes in accord with the sysex I generated.



    On 02/22/2018 09:34 PM, Alex wrote:
    I haven't tested in a while but I wrote an abstraction to take a
    list, wrap it in the sysex start and end and output it as
    individual bytes: https://github.com/x37v/pure_data

    midi is a byte oriented protocol..

    On Thu, Feb 22, 2018 at 1:24 PM, mario buoninfante
    <mailto:mario.buoninfa...@gmail.com>> wrote:


        do you guys know if there's a way to send a list of sysex
        messages (or 1 complete message, let's say 8 bytes long)
        rather then 1 byte per time?

        if not, do you know if there's a particular reason why it's
        not possible?



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