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Re: Crossfading Oscillators w/LFOs

2007-03-05 by ski_ex5tech

I think I programmed at least two or three patches like this, probably 
way back for the original Evolver presets, but possibly for the PER or 
PEK presets.  I think the name of one of these presets was "rEvolver", 
but I'm not positive.

Anyway, IIRC, all I did was use a *single* LFO (triangle wave) to 
modulate the amplitude and/or filter cutoff of two oscillators.  Set 
the initial amplitude/volume of the two oscillators to something in 
the middle range, then apply a positive amp/filter modulation from the 
LFO to the first OSC, and a negative amp/filter modulation from the 
same LFO to the second OSC.

One detail that I may have incorrect above... you might need to set 
the initial amplitude/volume of one OSC at max, and the other OSC at 
zero.  Sorry... I don't remember 100%, and I don't have my Evolver 
handy!  ;)

Yeah, unfortunately, you can't directly control LFO phase, but by 
using positive and negative modulation amounts, you effectively have 
the ability to use both 0 and 180 phases of the LFO wave.

Make sure you try this with all four OSC:  two LFOs running at 
different speeds, with one LFO crossfading two oscillators, and the 
second LFO crossfading the other two oscillators.  You'll get some 
nice, well... EVOLVING textures!

Hope that gets you going in the right direction.


Ski


--- In DSI_Evolver@yahoogroups.com, "wilsontherocker" 
<wilsontherocker@...> wrote:
>
> Does anyone know if it is possible to crossfade between oscillators 
> (say, 3 & 4) using the LFOs? I've tried, but so far I've only gotten 
> what sounds like the rise and fall of one osc, followed by the rise 
> and fall of the other with no overlap whatsoever.
> 
> I have been able to get the sound I'm looking for by using Env3 to 
> raise the level of an osc while simutaneously using Env3 negatively 
> (via a mod bus) to bring down the level of another osc. But 
obviously, 
> this is not loopable. Is there a way to do this with LFOs?
> 
> My overall goal here is to get some Prophet VS-style morphing 
> textures, but I'm just not sure it is possible with the evolver.
>

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