[sdiy] MIDI CC with Pots

Adam Inglis 21pointy at tpg.com.au
Tue Oct 7 00:57:10 CEST 2014


On 07/10/2014, at 1:17 AM, rburnett at richieburnett.co.uk wrote:
>
> The synth doesn't send out the CC again.  The synth processes the  
> control change due to it's internal local connection between the  
> control that was turned and the synth engine, and sends out a CC so  
> that the tweak can be recorded, but the sequencer then re-transmits  
> this CC message back out of its MIDI out port so that it ends up  
> arriving back at the synth via it's MIDI IN port to possibly get  
> processed again.

And if you are using data increment and decrement, every value change  
of 1 will end up being 2. This happens on my (Robin Whittle modified)  
DX7.
"Local off" would probably be easier than fiddling with sequencer  
settings that may require some menu diving.


Adam




> This is the situation I was discussing.  And whether "local off" at  
> the synth or dissabling thru functionality at the sequencer were the  
> preferred way to deal with this?  Or indeed whether people even  
> worry about it?
>
> -Richie,
>
>
> On 2014-10-06 16:06, Paul Maddox wrote:
>> Richie,
>>> On a related note, how are people dealing with the MIDI loop  
>>> problem these days when tweaking real-time controllers and  
>>> recording to their sequencer?
>>> To use Paul's example of a bassline playing over 2 bars and  
>>> someone tweaking the "filter cutoff" control on a synth...  This  
>>> manipulation of the control will change the filter setting  
>>> directly inside the synth, but will also result in CC messages  
>>> being sent out the synth's MIDI OUT port to the sequencer for  
>>> recording.  The sequencer then feeds these CC messages back out  
>>> it's MIDI OUT port and they arrive back at the synth's MIDI IN  
>>> port, where they presumably get acted on and set the filter cutoff  
>>> frequency inside the synth again!
>> errr, why?
>> Sorry, most synths I know when they receive a CC don't send it "out"
>> again, only to the 'thru' port.
>> Paul
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