EXS 24 Logic Sampler Users Group

> From: Hendrik Jan Veenstra <h@...>
> Subject: Re: ...2) Trigger On... (Group)?

> 
> They allow you to switch between different groups using any of the
> options as "switches".  So you could have C1 select the pizzicato
> group while D1 selects the legato group, etc.  Ditto with
> controllers: modwheel, values 0-63 could select one group, while
> values 64-127 select another.  The "select by group" is trickier than
> the others.  Last November (22th) I posted some thoughts on the
> subject.  I guess no-one will mind if I repost it here.  So here goes:
> 
> ----------------
> I hadn't even noticed, but indeed, in the Instrument Editor, if you
> pick a "Select by" option in a Group, a second "Select by" is added
> in which you can pick another selection criterion.  This is all quite
> esoteric stuff, I must say, and afaik hasn't been documented at all.
> I just played around with it a couple of minutes, and think I got it
> figured out -- the theory at least.
> 
> First of all, all Select criteria must be satisfied *simultaneously*
> before a Group actually sounds.  I.e. if you pick C1 as the Note to
> select Group1, and additionally set the 2nd "Select" to "Controller
> 1, values 0-63", then Group 1 will only play after you've hit C1
> _and_ CC1 has a value between 0 and 63.
> So suppose you have 3 groups: group1 and group2 are both assigned to
> Select by Note C1, and group3 is set to Select by Note C#1.  You also
> set group1 to Select by CC1, 0-63 and group2 to CC1, 64-127.
> Now hit C#1: group3 plays, plain and simple.  Hit C1: group1 or 2
> plays, depending on the current CC1 value.
> So you could use this to have two Notes select between e.g violin and
> trumpet, and then use the modwheel to select between either violin
> staccato/legato or trumpet staccato/legato.  I'm not sure though why
> you would do it this way: you might as well assign the 4 groups to 4
> different keys, and use that to select between violin-s/l and
> trumpet-s/l.  As I said: this is the (or: my) theory.  Any ideas for
> real-world applications are welcome.
> 
> As for the Select by Group#, this is the most puzzling of all imo.
> Again suppose there are 3 groups, G1, G2 and G3.  Set G1 to Select by
> Group:start, set G2 to Select by Group:G1, and G3 to Select by
> Group:G2.
> Now play staccato (i.e. unconnected) notes: you'll hear the notes
> being played by G1, G2, G3, G1, G2... respectively.  I.e. if G1 has
> played, then the next note will be played by G2, since G2 is set to
> Select by G1.
> 
> However (this is where it gets puzzling): play a note, and keep the
> key down. Suppose you happen to hear G1 playing.  Now play additional
> keys: they'll all play G1.  I.e. as long as you play legato
> (overlapping notes) the next group will _not_ be triggered -- all
> notes will be played by the same group.  Only as soon as you release
> all keys, and then hit a new key, will G2 sound.
> 
> Furthermore: one of the Groups must be set to "Select by Group:start"
> for this feature to work.  This is probably the way to "get the EXS
> on its way".  I.e. the EXS must know which group to start with.  You
> can't have 2 groups set up like "G1 selects G2, and G2 selects G1" -
> you'll simply hear nothing.
> Also the groups should be picked out uniquely.  You can't have G1 set
> to 'start' and then have both G2 and G3 selected by G1: only one of
> the groups (G2 or G3) will actually sound.
> 
> Still there?  Fine :-).  I'm not sure how you would ever use this
> "Select by Group#".  One application (although not too sensible imo)
> would be to have e.g. 6 kick-drums assigned to the same key, each in
> its own group, and then have group2 be selected by group1, group3 by
> group2, etc, so that each new kick-hit (which usually is unattached
> from the previous hit) triggers the next kickdrum.  This way
> successive notes would cycle through all 6 kicks...
> 
> Rather pointless imo.  What you _would_ want (maybe) is 6 layered
> kicks, and each note picks out a _random_ kick-sound -- to give a
> kind of natural variation.  But _that_ can be achieved in the EXS
> itself (not in the Instrument Editor I mean).  Set the 'Select Range'
> in the Instrument editor to adjacent ranges. With 3 groups (kicks)
> that would be e.g. 0-42, 43-84, 85-127.  In the EXS set the
> modulation matrix to "dest: sample select, source: LFO1", and set
> LFO1 to a random wave (2nd from below).  Set an appropriate speed for
> LFO1, and off you go.
> ----------------
> 
> 
> Hope this helps a bit...