Access Virus Oscillator Modeling

wavesinspace · Joined: Dec 25, 2004 Posts: 20 Location: planet earth

does anyone here have an oscilliscope? I wonder if it is possible to model any of these waveforms on a nord g2:

[url] http://www.waf80.de/virus/viruwaves/ [/url]

cebec · Posted: Wed Jul 13, 2005 7:48 am Post subject:

try these apps.

Wave Tools

http://www.sonicspot.com/wavetools/wavetools.html

Visual Analyzer

http://digilander.libero.it/hsoft/

wavesinspace · Joined: Dec 25, 2004 Posts: 20 Location: planet earth

sample based oscilators would be a nice feature on the g2...

ian-s · Posted: Thu Jul 21, 2005 3:33 pm Post subject:

If these are the classic Virus waves, then they are just summed sine waves. Rather than try to match the shape, you just need a fft to work from and a handful of sine oscillators.
Maybe someone can post a wav file with just the waves swept.

wildbill · Joined: Apr 28, 2004 Posts: 46 G2 patch files: 2

are you talking about these?:

http://www.waf80.de/virus/viruwaves/

some of them look pretty doable, like 15.26.28,30,45,53 etc.

others may be more a matter of chance.

mosc · Posted: Thu Jul 21, 2005 6:59 pm Post subject:

I'm going to move this to the Modular Synthesis forum since it is more general than NM or G2, but I'll leave a link in the Nord Modular Discussion.

I don't have a Virus. Are these waveforms the oscillators make? Is there a patch control paramater to choose one of these?

ian-s · Posted: Thu Jul 21, 2005 8:25 pm Post subject:

From what I understand, the virus oscillators produce classic saw/rectangle waves in one mode, and these other waves in the other mode. They can be swept but they aren’t really setup like a wave table (with gradual variations between adjacent waves). I personally don’t much like these type of phase locked waveforms, they remind me of those old sound cards for the Apple IIe. The TI has a proper wave table model but I think it still hasn’t been released.
If you could run each cycle through a spectrum analyser, you would get the relative harmonic levels/ratios (probably all integer) and just reproduce it by summing sines. The end result would perhaps look different unless you lined up all the phases, but it would sound the same.

mosc · Posted: Fri Jul 22, 2005 6:58 am Post subject:

Yes, I would think these waveforms would sound very static.

wildbill · Joined: Apr 28, 2004 Posts: 46 G2 patch files: 2

one good feature about them is that you can use those waveshapes as LFO's in the Virus.