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Rejection Setting

Rejection Setting

2003-02-28 by brown8700 <brown8700@aol.com>

OK Guys, help me out.
I have a college degree and I'm pretty smart, but this rejection 
setting logic (and its explanation in the manual) has me stymied.
Here's what I'm trying to do:
I have a Pintech cc101 snare. The snare triggers into #1 and the rim 
into #9. For one of my kits I have a snare (#98) for trigger #1 and a 
sidestick (#112, I think).
Naturally, when I go for the sidestick, on trigger #9, I end up with 
crosstalk coming from trigger #2. So, I thought I could go to the 
trigger setup in #2 and set a high rejection value for signals coming 
from trigger #9. 
The LED looks something like this:
Trigger #2 
SPCrej = 9   frm = 9

However, this action cancels out any signal at all from the rim. So, 
I reversed my settings, like so:
Trigger #9
SPCrej = 9  frm = 2

This resulted in the same outcome, in that I could only get a snare 
snare when hitting the pad or the rim.

I didn't have time to mess with this further, but I'm thinking that I 
should now try one of two things:
1) Use the first logic but lower the SPCrej value.
2) Go back to aucustic drums.
Advice?
Stephen (Not as old as Walt, but feeling every bit a much like it)

Re: Rejection Setting

2003-02-28 by liberatusvirus <liberatusvirus@yahoo.com>

Hi Stephen,

Here's my take on this: First, it's hardly surprising that a piezo 
on the body and one on the rim of a snare would be prone to 
interaction. Regardless of the obvious physical proximity of the 
two, sidesticking itself presents another problem, namely, that it's 
hard to hit the rim without implicating the body, at least to some 
extent (more on that later). Also, when playing a sidestick on the 
Pintech, it's best for the stick not to traverse the center of the 
drum but to approach the far rim from a little below the diameter, 
so that you're coming up at a slight angle. 

On specific rejection: Spec. rej. reduces the sensitivity of one 
trigger when another particular one is hit for a certain period of 
time. Specifically rejecting 9 from 2 at at a level of 9 means that 
2 won't sound when 9 is hit unless the level of force that reaches 
it, from anywhere, including its own surface, is higher than 9. But 
you can see how limiting that is for poor pad 2. It needs so much 
juice to make a noise when pad 9 is hit, it might just as well give 
up, and it does. Unless you're using one of spinal tap's amps, not 
much gets above 9. So when both 2 and 9 are struck at the same time, 
2 simply shuts up. 

But how does this affect me, you say? My problem is exactly the 
opposite: Input 2 works but 9 doesn't. Well, when you hit 9, you're 
probably also hitting 2, but most likely not very hard, not at a 9 
level--an occupational hazard with sidesticking. So what's happening 
is that because 2 is getting a bit of a hit when 9 is getting a bit 
of a hit, though not hard enough to break that sound barrier set in  
2's spec. rej., you're not getting any sidestick sound.

The remedy is twofold: try to sidestick implicating as little of the 
snare's body as possible and turn down 2's specific rejection of 9 
and 9's specific rejection of 2 to the point at which they work well 
independently. 

Yikes, that sounds complicated. I hope it helps.

Ed


--- In DTXpress@yahoogroups.com, "brown8700 <brown8700@a...>" 
<brown8700@a...> wrote:
> OK Guys, help me out.
> I have a college degree and I'm pretty smart, but this rejection 
> setting logic (and its explanation in the manual) has me stymied.
> Here's what I'm trying to do:
> I have a Pintech cc101 snare. The snare triggers into #1 and the 
rim 
> into #9. For one of my kits I have a snare (#98) for trigger #1 
and a 
> sidestick (#112, I think).
> Naturally, when I go for the sidestick, on trigger #9, I end up 
with 
> crosstalk coming from trigger #2. So, I thought I could go to the 
> trigger setup in #2 and set a high rejection value for signals 
coming 
> from trigger #9. 
> The LED looks something like this:
> Trigger #2 
> SPCrej = 9   frm = 9
> 
> However, this action cancels out any signal at all from the rim. 
So, 
> I reversed my settings, like so:
> Trigger #9
> SPCrej = 9  frm = 2
> 
> This resulted in the same outcome, in that I could only get a 
snare 
> snare when hitting the pad or the rim.
> 
> I didn't have time to mess with this further, but I'm thinking 
that I 
Show quoted textHide quoted text
> should now try one of two things:
> 1) Use the first logic but lower the SPCrej value.
> 2) Go back to aucustic drums.
> Advice?
> Stephen (Not as old as Walt, but feeling every bit a much like it)

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