[sdiy] Paia Midi/CV - Glide

[Dave Kendall]

Hi.
The MIDI spec doesn't have MIDI glide "events" as such.
The closest to that is MIDI CC65, which is configured as a switch 
(values of 64 and above are on, below 64 =off) and is the portamento 
on/off switch. Portamento and glide can be implemented differently, ( 
no, I'm not going into that one....)  but in many cases can practically 
be used in the same way.
The paia doesn't respond to MIDI CC65 unfortunately.....
Midi continuous controller 5 (portamento time) is the the closest thing 
to glide rate.

In mode 4, the paia will generate midi controllers 0 thru 7. In the 
paia, the modes are fixed - you choose which sets of MIDI decoded 
messages you want with the mode switch. (check the operating modes page 
on the paia site - it's also in the printed manual with the unit if 
you've bought one already)

If your sequencer is an analogue one, you can have glide on or off per 
step, by including a separate set of on/off switches, one for each 
step, that feeds a second gate output . This is then patched into a 
gate-controlled LAG processor, which when patched before a VCO gives 
glide. Thus your sequencer only needs a clock, stop, and start. Glide 
on/off is handled in the sequencer itself.
A CV controlled portamento could be fun if fed from a bank of pots - 
different glide rates per step.......

The CGS 07 gate sequencer is worth a look at.....

Hope this helps... :-)

cheers,
Dave

On Nov 6, 2007, at 16:13, Scott wrote:

> Does anyone know if the Paia midi/cv processes midi GLIDE events?  I've
> got one, and am building a sequencer that sends midi glide events.  I
> guess I can figure it out on my own soon enough, but would really like
> to know now!!
>
> thanks,
> Scott
>
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