[PD] beginner's MIDI routing questions

[Frank Barknecht]

Hallo,
Ryan Supak hat gesagt: // Ryan Supak wrote:

> I'm trying to use PD as a MIDI routing tool -- I was using MIDIOX
> but I want to go a little more in-depth.  Right now I'm still trying
> to learn the basics.
>  
> I'm currently playing with the ~notein 

Careful With That Tilde~, Eugene. ;) It has a special meaning in Pd
conventions (the philosphical ones, not the real ones), that is
denoting signal objects and then belongs to the end of the object
name.

> and ~ctlin objects, and apparently the ~notein is aware of note
> number, velocity, and midi input number -- and the ~ctlin is aware
> of ctrl number, ctrl value, and midi input number.
>  
> 1) what's the best way to determine the midi channel of incoming
> data (and ultimately to output the data stream as a certain midi
> channel)?

Well, look at the midi channel outlet of [notein] or [ctlin], it sends
the midi channel number.

> 2) I used pd -midiindev x,y to tell pd which midi inputs I wanted.
> MIDI input 1 is showing up as "1", according to ~notein and ~ctlin,
> but MIDI input 2 is showing up as "17" or "20" (depending on the
> parameter used).

Yes, that's normal: The first device in Pd sends midi channels 1-16,
the second sends 17-32 and so on for each device you can add. 

To me it seems, that you are using the term "midi input" in a not
really consistent way. IMO it's better to not talk of "input" but of: 

* Midi device: the thing with plug and cable
* Midi channel: one distinct channel to send midi data like e.g. notes 
  or controller data. Generally midi devices have 16 of these. Also be
  aware that some operations are "Omni", that is, they get sent to all
  (16) channels ("bend").
* Controller numbers (CC): These don't really compare with above,
  better think of them as the equivalent to the notes in [notein].

> 3) Is it possible to send Program Change messages with PD?

[pgmin] and [pgmout] are for Program Change messages.

Ciao
-- 
 Frank Barknecht                               _ ______footils.org__