Dave Smith Instruments SYNTHESIZERS

The 1+5, 4+7, and 4+8 button combinations all did *something* on my 
Evolver, too.  However, none of them successfully tuned the filter on 
my unit, and I performed the routines three times each.

I actually get closer to a correct pitch *interval* (octaves within 
the patch are in tune) using a value of 73 for Filter Key Tracking, 
rather than 72 as recommended in the manual.  However, with a value 
of 73, it's impossible to get the *tuning* (relative to A3=440Hz) 
correct, because the Filter Cutoff adjustment is too coarse.

Strangely, changing the Filter Resonance value also appears to have a 
small effect on both the tuning and the interval of the filter 
oscillation.  I'm guessing that's just the result of some "analog 
reality" (i.e. imperfection) creeping in, as opposed to the digital 
perfection in other machines.


Ski
www.ex5tech.com
EX5Tech Evolver forum:
http://www.ex5tech.com/ex5ubb_cgi/ultimatebb.cgi?ubb=forum&f=23


--- In DSI_Evolver@yahoogroups.com, "thligrdd" <onthesurface@c...> 
wrote:
> I wish I could tell you, but I honestly don't know. I was trying 
> stuff like that out and I discovered all of those functions plus a 
> couple others, but I couldn't figure out exactly what each one is. 
I 
> emailed Dave about it and he told me, but that email has gone the 
way 
> of the dodo :( I'm sure he'd tell you if you asked him, in fact the 
> answer might be in some documentation somewhere, I don't know.
> 
> --- In DSI_Evolver@yahoogroups.com, "mbc0920" <m-cartwright@n...> 
> wrote:
> > so, yeah one of those worked.  not sure which one, I tried them 
> all.  What did those 
> > other things do (all of them had some sort of count down 
> involved)?  What other 
> > weird secret codes are there for this thing?
> > 
> > mark
> > 
> > --- In DSI_Evolver@yahoogroups.com, "thligrdd" 
<onthesurface@c...> 
> wrote:
> > > Maybe you guys just need to tune your filters? I'm not sure if 
> that's 
> > > actually the problem since my arcane setup would make it way 
too 
> much 
> > > of a hassle to test, but IIRC you can tune the filter by 
pressing 
> the 
> > > row buttons 4+7 simultaneously. If it's not that, I'm fairly 
> certain 
> > > either 1+5 or 4+8 should do it. 
> > > 
> > > --- In DSI_Evolver@yahoogroups.com, trippler@t... wrote:
> > > > The filter in my Evolver isn't tuned right too.
> > > > 
> > > > Audio Mod means that the filter cutoff frequency is modulated 
> by the
> > > > oscillator waveshape.
> > > > It is similar to modulating the filter cutoff with a very 
fast 
> LFO, 
> > > the
> > > > osillator beeing the LFO in this case.
> > > > I think it's called filter FM as well.
> > > > 
> > > > Regards
> > > > Stefan
> > > > 
> > > > ----- Original Message ----- 
> > > > From: "mbc0920" <m-cartwright@n...>
> > > > To: <DSI_Evolver@yahoogroups.com>
> > > > Sent: Sunday, September 14, 2003 10:05 AM
> > > > Subject: [Evolver] tuning filter with key amt
> > > > 
> > > > 
> > > > > hey,
> > > > > i'm kind of frustrated right now.  all i want to do is 
filter 
> > > some noise
> > > > with the 4pole
> > > > > filter and have it resonate/self-oscillate at the cutoff 
> freq.  
> > > Soooo....
> > > > i have the noise
> > > > > turned up only a little bit (9), the resonance all the way 
> up, 
> > > they key
> > > > amount set to 72
> > > > > (what it says in the manual to get a semitone 
> > > relationship)... .and i have
> > > > made sure
> > > > > that oscillator one is in normal settings etc... but I 
can't 
> get 
> > > it in
> > > > tune.  it always
> > > > > seems like the intervals are a bit flat.  any 
> recommendations?  I 
> > > think
> > > > i've tried
> > > > > twiddling with all of the settings mentioned with no luck.  
I 
> > > also have
> > > > tried messing
> > > > > with the audio mod setting on the filter and that seems to 
> change 
> > > it some,
> > > > but I
> > > > > haven't gotten it right yet.  Just out of curiosity... what 
> > > exactly is the
> > > > audio mod
> > > > > param on the filter?  Can someone explain that also... 
thanks.
> > > > >
> > > > > mark
> > > > >
> > > > >
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