EXS 24 Logic Sampler Users Group

>> From: Peter Ostry <po@...>:
>>  I recently got a Yamaha DTXplorer drumset and started mapping it to
>>  some drum samples I have.
>> ...
>>  HiHat, hit open -> close pedal
>> ...
>>  I know this: Hitting the open hihat sends note A#1.
>>  Stepping on the pedal sends CC4 56, then CC4 127 and then note G#1.
>>  How do I cut the "open hihat" sound if I step on the pedal?
>> ...
>>  Hihat, half closed
>>  The DTXplorer can play a "half closed" hihat if the pedal is at a  
>> value
>>  within 0-22. But I do not see a triggered note for that, ...
>
> On 19.09.2005, at 17:10, Joe Albano wrote:
> In EXS you could assign a closed hihat sample and a separate
> half-closed hihat sample to different Groups on the same note, and
> set the Groups to crossfade in response to different ranges of CC4,
> so opening the pedal fades between the closed hat to the half-closed
> hat sound.

Thank you, after reading your explanations and some other threads  
here I think I understand the concept more or less.

But if I assign overlapping CC ranges to groups, the "crossfade" is  
not a true one. It just plays both samples within the overlapping  
range. Not bad though and with the appropriate setting in the main  
window of the EXS it might get smoother. But I ran also into the  
known problem with polyphony when I cut the open hihat sound with the  
"pedal down" sound. Allowing just one voice for the open hihat  
doesn't sound good.

For what I play (I am everything else than a drummer) I need 4 voices  
for the open hihat. So I thought if I could trigger 4 silent samples  
at once the EXS group must run out of voices and be silent. And that  
worked :-)


> You can also use this technique to make the
> closed-hihat/pedal-hihat cut off any open hihat sounds - you could
> have two or three hihats (Closed/Half/Open)on the same note
> (apparently G#1 in the DTX) all crossfading in response to different
> ranges of the CC.

Maybe I still don't understand the "crossfade" issue, but I could not  
get that working and tried a different approach via the environment  
(I am more used to that than to the sampler):

In the EXS I put an open hihat sample at A#1 (comes from the drumset)  
for velocity 2-127 and additionally 4 silent samples which react only  
to velocity 1. The group "open hihat" is set to 4 voices. In the  
environment I catch CC4, the pedal. If it goes to 127 (fully down) I  
send an A#1 (open hihat) with velocity 1. That triggers all 4 silent  
samples and the EXS group shuts off.

And I added a half closed sample at B1 (does not come from the  
drumset). In the environment I extract pedal values between 56 and  
126. 56 is the only incoming value when I move the pedal down and 126  
is just not fully down. That sends also the "shut-up" message to the  
open hihat group and transposes incoming A#1 (open hihat) one  
semitone up to play the half open sound as long as the pedal is  
halfways down. Well, an open sound gets cut if I hit the open hihat  
and move the pedal slowly down but that is not a big issue for now.


> *However* in Logic 7.1 they have some odd CC
> re-mapping in effect automatically when CC4 is used for this purpose,
> so you should re-map CC4 ...

Never had a problem with that. What happens to your CC4?

---

I am not sure if my first try is just a weird workaround for  
something I don't understand yet . But if the idea of choking a  
polyphonic open hihat with enough silent samples is helpful for  
anyone it makes at least some sense :-)

___
Peter Ostry