I have to admit I'm very fresh to PD, and most probably I did not really understand all of the concepts.

My idea is to split a sequence of key events received on one midi channel to several (random or round-robin) midi channel numbers.
The problem occurs with the noteOff events - there I need to recall the (random) channel-number the noteOn event was sent.
I thought of a list with 128 elements for each note number. Thus setting the channel number when receiving a noteOn Event, and when reveiving the noteOff the channel is read back from the list end send out.
That's working "almost" fine - for one note. But unfortunately the tabwrite object is getting the channel number on its left "hot" inlet just before the note-number is set. Probably because the PD handles the events for outlets from right to left, on the right most outlet the channel appears first, issuing the table writing just before the note-number is set on the right input of 'tabwrite'.

I stretch my head with triggers, routing, spigots, delay, but I can't find a way to alter the order of the inputs to get it working.

Below first - is a simple patch illustrating my problem. When pressing down the first key, the list will show the channel is set for note-number 0 (zero) instead of, e.g,, 44,, pressing the second note, e.g., 48, will store the current channel at list element 44 instead of 48 - thus the channels are always stored for the previous key event.
The second parch below shows what I was working on - including some debugging number-boxes and bangs.

Any idea or hint is highly welcome - thanks a lot
Lou

Hi jameslo, thanks for your hints. You are right being vague - best way to learn digging into it by my self.
Will come up with a solution or trigger you when I gave up:-)
Thanks meanwhile!
Lou

@Lou As this is such a basic principle of Pd it might not hurt just to show it. Yes, it is because of the right to left order.

I would second the recommendation for [swap].

hjh

Thanks for your support, guys! Both suggestions work perfectly, of course.
Just in case someone stumbles across this thread, I've attached both variants for the "midi channel splitter" below.

I've tried to implement the upper solution of the two above on my Organelle without success. I'm afraid I'm not very good on Pd, but hope it's ok to ask for n00b help here.

I’m trying to create a patch that will allow me to control the Dirtywave m8 tracker (it’s amazing…) over MIDI for polyphony. Getting polyphony out of the m8 involves a bit of a hack, as it’s a tracker: each incoming midi channel can only play monophonically, so to get polyphony, you need to take the notes of a chord and send each note to a different midi channel (each incoming channel, in the m8, will be connected to the same instrument).

I added the solution above to an existing (useful!) organelle patch called Midi Control Keys that has features I wanted to keep (like octave switching, transpose, and seq) which was created following a discussion here:

https://forum.critterandguitari.com/t/organelle-as-midi-keyboard-change-note-range/2591/4

My attempt was only partially successful… I made a patch that successfully distributes the midi notes played on the organelle across different midi channels, so I can play polyphonically on the m8. Unfortunately it doesn’t turn notes off afterwards!

Is there a genius that can help please? Something is amiss in this patch, it might be something small, it might be something huge, but I'm afraid Pd is a technical domain where I'm just getting by rather than flying!

https://www.dropbox.com/s/h6xjph32fclsra3/m8 roundrobin.zip?dl=0

For those who don't know the Organelle is a neat hardware synth with battery/speaker/mic/screen/keys/knobs that runs Pd, there is a help patch called mother.pd that handles interaction between patches and the Organelle hardware, and that can be modified on a per patch basis, which is what this one does (that also explains why a few of the in and out objects might seem somewhat non-standard names).

https://www.critterandguitari.com/manual?m=Organelle_M_Manual#62-operating-the-organelle-as-a-computer

Here's the salient part of the mother.pd patch where I've made the changes..

My bad! I left out two connections (the GUI of Pd is great but sometimes challenging to transcribe things!). I've added the two missing connections but it still doesn't work, it is sending out notes on sequential channels but the note-off only sometimes and usually not, so notes just ring. My skills are not up to this, hope I'm not being too annoying in a forum of experts!

Corrected patch is here:
https://www.dropbox.com/s/lto6gs8wxtuwml2/m8 roundrobin2.zip?dl=0

@bengorilla The OP didn't post the solution as a patch....... and very unfortunately didn't put triggers [t f f f] on the outlets of [notein] so we cannot know the order of connections.
It looks as though you have copied it exactly, but if the connections to [notein]....... or [unpack] in your patch........ were not made in the correct order that could explain your note off problem....... maybe.....
The text might indicate the connection order that is required........ in the very first post they had the same problem and wrote about the order that they needed.
It looks like the order should be [stripnote] [swap] [tabread] [noteout] [pd transpose]........ but that is another maybe from me......
Read this too to understand better what I am talking about....... https://forum.pdpatchrepo.info/topic/13320/welcome-to-the-forum
David.