Emax

The EIIIx digital filters were, to my understanding, implemented in a 
separate chip--i.e. the burden of 32 channel realtime IIR filtering 
was not put all on the main processor but rather moved to a separate 
digital chip instead of separate CEM filters. 

The tools i'm talking about seem to have nothing to do with the 
realtime filtering datapath.  They are likely microprocessor 
algorithms run on the main controller; I think this is why nothing 
else can be done while the processing takes place.

Perhaps the co-processor matter is the decisive one.  What that 
really means i'm not sure.  What was a co-processor in terms of 1988 
technology?  Was this a separate DSP-type chip or some extra built in 
PAL logic to do transposing?  And why could it be removed (i.e. 
faster next-gen main processor?).. It seems the algorithms were just 
not deemed useful enough to be ported to later models.. oh well too 
bad.  I'm really pretty glad I bought my EIII rack though.




--- In emax@yahoogroups.com, Garth Hjelte <garth@c...> wrote:
> At 06:48 PM 2/8/04 +0000, you wrote:
> >Hi, I have an emulator III rack with O.S. 2.42.  I use it a lot 
with
> >an Sp1200; dumping sampled signals to the EIII for processing and
> >back to the SP for playback.
> >
> >I have a pretty good selection of destructive editing tools on the
> >EIII (especially for a 93 OS!).  I have a huge 256 tap 
lowpass/hipass
> >phaselinear filter, all other IIR filter forms, compression, 
digital
> >eq, etc...
> >
> >My question is why Emu removed some of these filters from the EIIIx
> >and ESI models.  They seem to keep the EQ and compression-- but
> >that's pretty much all that remains.. any reason for this?  Or do
> >they have these features in some OS update that doesn't get 
mentioned
> >in the manuals?
> >
> >Anyone know about this?
> 
> They switched to digital filters starting with the EIIIx, different 
deal, 
> different things. The plain EIII is highly coveted for those 
reasons, the 
> analog filter is really cool.
> 
> Note that the new Emulator X - the Emux =) - has a buttload of 
filters.
> 
> Garth Hjelte
> Sampler User