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adambee7
Joined: Apr 04, 2009 Posts: 420 Location: united kingdom
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Posted: Wed Jun 09, 2010 3:28 pm Post subject:
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Silesius wrote: | Ufff!! And, regarding that YAVCO, I have just one (stupid, because it seems quite clear) question: you can only build one VCO per chip, isn't it? Or maybe two or three of them, but everything will be controlled by the same CV, right? Anyway, I will try it tonight.
And the last one (I don't want to abuse ). I really want to try that VCA/AR, but I have some doubts: what do i plug in the "gate" in, a clock or what? And what goes in the other input, a simple 40106 oscillator?
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you can add more vcos using the same chip but they would have to share the same board. When I perfect mine i'm puting three of them on one board and hopefully find a way of syncing them using the trig outs.
With the AR/VCA the gate wants to be 0-5v from something like the gate out of a 4017 sequencer and clock "AND"ed together produce good results, |
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Silesius
Joined: Feb 12, 2010 Posts: 65 Location: Berlin
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Posted: Thu Jun 10, 2010 4:38 am Post subject:
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adambee7 wrote: | The osc I used was the exp version of synthmongers VCO where I inverted the reversed ramp through a simple transistor inverter and then into a ramp to tri converter. |
Hey Adambee, would you be so nice to show or explain us the circuit you used to convert that waves, please? I know it's simple, but now I'm still not able to figure it out myself. Big thanks |
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RF
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
Audio files: 28
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Posted: Thu Jun 10, 2010 6:26 am Post subject:
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Silesius wrote: |
And, regarding that YAVCO....question: you can only build one VCO per chip, isn't it? Or maybe two or three of them, but everything will be controlled by the same CV, right? |
Rich posted a drawing for multiple voices controlled by one CV in this thread:
http://deathlehem.com/php/viewtopic.php?f=21&t=151
and you'll also find a couple clips of the 'chorus' idea in the same thread....
bruce _________________ www.sdiy.org/rfeng
"I want to make these sounds that go wooo-wooo-ah-woo-woo.”
(Herb Deutsch to Bob Moog ~1963) |
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adambee7
Joined: Apr 04, 2009 Posts: 420 Location: united kingdom
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Posted: Thu Jun 10, 2010 11:57 am Post subject:
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Silesius wrote: | adambee7 wrote: | The osc I used was the exp version of synthmongers VCO where I inverted the reversed ramp through a simple transistor inverter and then into a ramp to tri converter. |
Hey Adambee, would you be so nice to show or explain us the circuit you used to convert that waves, please? I know it's simple, but now I'm still not able to figure it out myself. Big thanks |
Yeah sure, give me a day as i'm just doing a bit of work on someone's house wiring. I'm redoing the inverter with an opamp instead of a transistor based one which i'm using at the moment. I'll have the drawing up tomorrow for you. |
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Rykhaard
Joined: Sep 02, 2007 Posts: 1290 Location: Canada
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Posted: Thu Jun 10, 2010 2:27 pm Post subject:
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RF wrote: | Silesius wrote: |
And, regarding that YAVCO....question: you can only build one VCO per chip, isn't it? Or maybe two or three of them, but everything will be controlled by the same CV, right? |
Rich posted a drawing for multiple voices controlled by one CV in this thread:
http://deathlehem.com/php/viewtopic.php?f=21&t=151
and you'll also find a couple clips of the 'chorus' idea in the same thread....
bruce |
I completely forgot about that implementation of mine! Dang. I'll have to give that a whirl. It'd take a little premeasuring to get the caps exactly right and possilby a larger trimmer to match the 3 pots but Boy - would THAT guy be nice for knocking down walls / etc.! Now that it's remembered thanks to you, I'll have to add it to my huge pile of "to do" things, to switch my focus to at some point.
(I think I've forgotten what the term 'focusing on one thing' means. |
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droffset
Joined: Feb 02, 2009 Posts: 515 Location: London area
Audio files: 2
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adambee7
Joined: Apr 04, 2009 Posts: 420 Location: united kingdom
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Posted: Sat Jun 12, 2010 4:53 am Post subject:
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Silesius wrote: | adambee7 wrote: | The osc I used was the exp version of synthmongers VCO where I inverted the reversed ramp through a simple transistor inverter and then into a ramp to tri converter. |
Hey Adambee, would you be so nice to show or explain us the circuit you used to convert that waves, please? I know it's simple, but now I'm still not able to figure it out myself. Big thanks |
i've found the link to the saw to tri converter. Its not bad.
http://electro-music.com/forum/topic-30667.html |
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