What can we do with 2 TVA ?

oXo · Joined: Sep 20, 2004 Posts: 36 Location: Paris

Hi all,
I've the following configuration with my synth :
VCO-->VCF-->VCA-->VCF-->VCA-->

And I have LFO and an Env for each module.
Are there special things/sound we can do with 2 VCA like this ?

Regards,

oXo

mosc · Posted: Mon Sep 20, 2004 8:15 am Post subject:

oXo

What kind of synth is this? There is precious little information here. Is it a modular synth you can reconfigure with patch cords or a fixed architecture. Having 2 VCAs in series like this is a bit unusual, but you can get some good effects by modulating the first one with a LFO square or something and using the second one for the envelope of the notes.

oXo · Joined: Sep 20, 2004 Posts: 36 Location: Paris

Thanks [mosc]
In fact it's a MC909 ! and I've found a little hack to have this kind of configuration ... I know that's a bit unsual so it's why I ask this question to modular's guys like you Wink

I'll test your suggestion tonight...

If you have other idea, you 're welcome.

I think, in a near futur I'll write a little tutorial to people's wanting to do "sound design with the 909".

I'm the webmaster of : http://www.mc909.org and may be a futur G2's ower Cool

oXo

mosc · Posted: Mon Sep 20, 2004 9:23 am Post subject:

The 909 looks really cool. I've never played around with one, or even with it's legendary predecessors. I imagine it would make an excellent partner with a G2. This site has a lot of G2 users here, but we're open to all electronic instruments, hard and soft, old and new.

jksuperstar · Posted: Mon Sep 20, 2004 9:28 am Post subject:

Other than using the 2 VCA's with 2 different LFO's or 2 different envelopes to get more than just ADSR (theoretically you could get a 7 step envelope by staggering the stages so the two VCA's add up to something very strange), I don't see many tricks coming out of having a VCA before the 2nd Filter.

However, the 2 Filters could give you alot of fun: Especially if you can get them into Notch or Bandpass configuration. Then you could use one as a low-pass, and the other as an LFO'd bandpass that constantly sweeps around the other. Or put both in "notch" mode, and you'd get a phaser effect. You could also just program the filters to be identical...this would give you a really sharp transition band (don't know the original specs, but you might get 48db or so, and twice the resonance, and if they are self-resonanating filters, you might get two different frequencies resonating in harmony).

oXo · Joined: Sep 20, 2004 Posts: 36 Location: Paris

Thanks [jksuperstar], great ideas ! Very Happy

The night will be long Wink

People on the Internet are very cool, Thanks again to share your idea and experience...

oXo

mosc · Posted: Mon Sep 20, 2004 1:06 pm Post subject:

oXo, be sure to let us hear what you come up with.

elektro80 · Posted: Mon Sep 20, 2004 2:21 pm Post subject:

Nice pix! But what is this MC909? A synth with a sequencer and a drum machine? I had an MC202 way back. Is this something similar?

having rows of VCAs and envelopes is great fun. And the fun starts when you have this is a modular setup. You can like.. split the signal by sending it out to a reverb, then use the envelopes /VCas for regulating the mix volumes and you can create spatial effects and so on in stereo.. whatever you may think of really.

oXo · Joined: Sep 20, 2004 Posts: 36 Location: Paris

[elektro80]
The Mc909 is a sequencer, drum machine, synth and sampler machine !
We have mainly static architecture, but there are 10 fixed configurations (with Ring mod, or Booster a specific Roland mode).
I think the more interesting stuff with it to make sound are :
- morphing LFO
- the possibilites to use any sample as a waveform for the oscillator ( I think you don't have this on the G2, no ?)
- and 6 differents filter type (LP,HP,BP,Notch, 2 others LP without self-resonanating)