EXS 24 Logic Sampler Users Group

On a fine day, 01-05-2003, Evan Evans wrote:

>Is there a way to achieve a random or random-like sample select? Perhaps
>from an extremely fastly oscillating LFO?
>
>I have a Pizzicato sound which has 3 different samples of Pizz. I 
>want to set it up so that it is selecting from any of the three 
>randomly while I am playing.

The "obvious" way would be to have Sample Select be driven by LFO1, 
which is set to a _slow_ tempo.  The problem with that though is that 
the sample may switch somewhere during a held note, which obviously 
isn't the idea...

A working approach would be by using an environment patch.  Cable a 
Monitor between Physical Input and To Sequencer object.
Cable from the Monitor to a transformer as well, which in turn is 
cabled into the EXS channel strip.
I.e. you have PhysIn > Monitor > To Seq, and also Monitor > Transf > EXS.

In the transformer, set top popup to "Apply operations and filer non 
matching".  Set Conditions to "Status=Note, -2- Unequal 0" (leave the 
rest alone)
Set Operations to "Status = Control, Cha=2, -1- Fix 100, -2-=Rand"

This turns note-ons into Controller 100 (or whichever you like), and 
maps note-velocity to a random value.

Then in the EXS set up the modulation matrix to have Sample Select be 
driven by Controller 100.

Haven't tried this myself, but this should (roughly) work.  The only 
drawback is that the random-map is static -- so that e.g. a velocity 
of 60 will always result in the same controller value.

As a (better) alternative you could download my RandomCC patch (Logic 
section of my website -- see signature) and use that instead of the 
transformer in the description above.  Should be largely 
sel-explanatiry, after the above description.  If not, or if this 
doesn't work, just send another msg to the group and I'll look into 
it more thoroughly...

-- 
Hendrik Jan Veenstra  <h@...>
Omega Art: http://www.omega-art.com/