Art Hunkins wrote:

> Of course my answer to your question is "all of them."

It does not make much sense to read a controller on all channels
at once with a single opcode call; or do you expect the 16 values
to be averaged somehow ?

Of course my answer to your question is "all of them." Much like if notes
were coming in on all channels they would all end up being read by i100.

I think we'd both agree that neither of these situations make good sense,
and that in *both* cases the attempted pairing of instrument numbers with
input channels is ambiguous.

Yes, ctrl7 eliminates the ambiguity; so much so that I never use midictrl,
and indeed even thought it was broken! It's hard enough keeping
midi-triggered *notes*, channels and instruments paired correctly.

For midi-note input it would really be better to abandon the
channel/instrument convention and add an explicit channel variable to midi
opcodes. This would free input to be used with any given instrument number
(much like ctrl7). However, I fear this would break things, so..... I guess
matters should stay as they are.

Art Hunkins

----- Original Message -----
From: "Istvan Varga" 
To: 
Sent: Tuesday, October 25, 2005 4:04 PM
Subject: Re: [Csnd] Midictrl vs. Ctrl7


> Art Hunkins wrote:
>
> > OK, I appreciate what you are saying now. We have the problem of
"channel
> > clog." All sixteen channels are being occupied by instrument 1(-16), and
> > there is no channel left for any controller messages not destined for
> > instrument 1(-16).
>
> Of course, we can modify the example as shown below
>
> sr = 44100
> ksmps = 10
> nchnls = 1
>
> instr 100
> kctl  midictrl 7
> printk2 kctl
> endin
>
> so that now all MIDI channels use instr 100, but when instr 100 is
> triggered from the score, which one of the 16 channels should be read
> by midictrl ?
> Anyway, what I am trying to explain is that when midictrl is used
> in a score note, there is no universally reliable and unambiguous
> way to select the correct channel number. That is why you should
> use ctrl7 instead in non-MIDI activated notes. One could try to
> implement obscure heuristics in midictrl to attempt to guess the
> channel number, but it would not always work, and is just not really
> worth the effort.
> --
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