Dave Smith Instruments SYNTHESIZERS

I think I've isolated the problem. Let me know if anyone else has this trouble. It must be 
some strange quirk with the Evo because I also tried it with my Evo Desktop and the same 
thing happens,

-turn all oscillators off except Osc. 4, use any waveshape and turn up the volume.
-Open filter , and set VCA  amount to 100. 
-Everything else should be off. no noise, no delay, no LFO's or Mods. Everything else off.
-you should be getting only the sound of osc.4
-Now set distortion to 2 and sound disappears.

What the heck?

On 06 Oct 2007, at 19:43, dhamaryder wrote:

>  -turn all oscillators off except Osc. 4, use any waveshape and turn 
> up the volume.
>  -Open filter , and set VCA amount to 100.
>  -Everything else should be off. no noise, no delay, no LFO's or Mods. 
> Everything else off.
>  -you should be getting only the sound of osc.4
>  -Now set distortion to 2 and sound disappears.
>
>  What the heck?
>

It happens on my Evo's too! (I have a DEVO and a PER). In fact, it 
suffices to set Distortion to 1. :-)  But it only happens when Output 
Panning is set to St 1 (or LxxxxR). Same problem with Osc. 3 but now 
with Output Panning set to rS3 (RxxxxL). Very weird. I never noticed 
this. Must be a bug.

Tomas.

The distortion unit imho is a kind of waveshaper. Waveshapers need a 
particular input level to be activated. You can also hear that on higher 
distortion levels: if you release a note with much distortion, the sound 
first seems to sustain for some time after the note has been released and 
then fades quickly when it goes below a certain level.

I think that the behaviour you describe lies in the nature of the distortion 
circuit, it's not a bug.

----- Original Message ----- 
From: "dhamaryder" <dhamaryder@...>
To: <DSI_Evolver@yahoogroups.com>
Sent: Saturday, October 06, 2007 7:43 PM
Subject: [Evolver] Osc.#4 and distortion control


I think I've isolated the problem. Let me know if anyone else has this 
trouble. It must be
some strange quirk with the Evo because I also tried it with my Evo Desktop 
and the same
thing happens,

-turn all oscillators off except Osc. 4, use any waveshape and turn up the 
volume.
-Open filter , and set VCA  amount to 100.
-Everything else should be off. no noise, no delay, no LFO's or Mods. 
Everything else off.
-you should be getting only the sound of osc.4
-Now set distortion to 2 and sound disappears.

What the heck?

--- In DSI_Evolver@yahoogroups.com, "Stefan Trippler" <doct@...> wrote:
>
> The distortion unit imho is a kind of waveshaper. Waveshapers need a 
> particular input level to be activated. 

Yeah, that's interesting, I actually wondered about that. When you add in, say, oscillator 1, 
after a certain point everything opens up and behaves normally. It's odd though, that you 
can have osc. 4 level all the way to 100 and that's not enough to push it open. 

steve
smcmusic.net

But then, why is it that you CAN hear the distorted Oscillator 4 when 
panning is set to RxxxxL, while you can't when set to LxxxxR?

I would at least call this "strange behavior" :-)

Now that we're on the topic of Evo's quirks, I wonder whether anyone 
noticed this one (it might have been corrected in a recent version as I 
reported this one to DSI some time ago...):

Set any of the LFO's to modulate whatever you like and put the 
frequency to 20: one cycle will take 2.5 seconds. Change it to 22: one 
cycle will now take 2 seconds. Nothing strange here, of course. But 
now, change the frequency to 21; you'd expect one cycle to take 
something like 2.25 seconds, in reality, it is 4!

On 06 Oct 2007, at 23:57, Stefan Trippler wrote:

> The distortion unit imho is a kind of waveshaper. Waveshapers need a
>  particular input level to be activated. You can also hear that on 
> higher
>  distortion levels: if you release a note with much distortion, the 
> sound
>  first seems to sustain for some time after the note has been released 
> and
>  then fades quickly when it goes below a certain level.
>
>  I think that the behaviour you describe lies in the nature of the 
> distortion
>  circuit, it's not a bug.