Emu XL-7 & MP-7 User's Group

Currnet Emu filter math used by the DSP in the Proto 2K series does 
not let the resonance of the filter change over the course of the 
note.  Resonance is fixed at note on.

We went 'round about this quite a bit last week.  

Personally it is an annoyance, as I tend to use 16th or 32nd note 
runs on stuff I want to monkey with the res on.  Can't even notice it 
then.

Cutoff is another matter.  That works just fine in real time.  With 
the crazy modulation these things do you can have quite a bit of fun 
with it too.  With luck they will do some work on the filters before 
long and life will be even better.

As has been stated before the fact that the Proto 2K modules are 
using the 14 pole filter designs (first seen in the Morpheus) 
requires some pretty hefty math.  One of the things that the Emu guys 
did to get the filters so that a DSP could run them in real time was 
to limit the number of variables. So resonance got fixed at note 
on.   There is opinion in the group that modern DSPs with their 
increased power might be able to handle real time resonance 
adjustments.

So far there has not been comment from the Emu folks on this list if 
this is something that they are tinkering with in the back room, and 
no comment is expected.

There is also some agreement that while the Emu filters might need 
some upgrading, as the "analog" impersonations are not on part with 
the ones from most of the VA synths (Novation, Korg, Waldorf) that 
you can get.

Bruce

--- In xl7@y..., innerspace3@e... wrote:
> I've been looking into the XL7 for a little bit now, but let me get 
> this right. You can't sweep the filter"q". You can only do this 
> during note on. Please tell me this isn't so and be fixed in an OS 
> update. I may have read wrong, and I hope someone here can prove me 
> wrong. I realy like the unit, but for the type of music that I do, 
> this feature is vital to me. 
> Thanks for humoring me.
> Prana