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Adjusting slope of a 911EG ?
Posted: Tue Jul 28, 2015 8:55 am
by rarecomponent
I notice on Arturia's Modular V software , there's an option to adjust the slope of the combined VCA/911....
Would anyone know how to modify the 911 schematic to achieve this ?
I'm thinking of the Attack phase more than anything .A small control placed on the panel would be ideal to adjust the slope.
I have cloned 911's so wouldn't be tinkering with the genuine item.
Re: Adjusting slope of a 911EG ?
Posted: Tue Jul 28, 2015 1:42 pm
by MC
Do you mean shape not slope? Shape is linear, log, exponential. Slope is rise/fall per unit time, which is what A/D/R controls are for.
If you're referring to shape, some things are easier in software.
Re: Adjusting slope of a 911EG ?
Posted: Tue Jul 28, 2015 2:16 pm
by rarecomponent
Yes, I meant to say that it's probably a case of possibly changing the slope from linear to exponential....if it could be done by altering or adding some components ?
Re: Adjusting slope of a 911EG ?
Posted: Wed Jul 29, 2015 11:49 am
by robotmakers
rarecomponent wrote:Yes, I meant to say that it's probably a case of possibly changing the slope from linear to exponential....if it could be done by altering or adding some components ?
You could at least experiment with the results by feeding the 911EG to the control input of a 902 VCA set to exponential. Then feed a constant 5V source into the 902. The output of the 902 will be a magically exponential 911.
Your mileage may vary,
Roger
Re: Adjusting slope of a 911EG ?
Posted: Thu Jul 30, 2015 6:09 am
by rarecomponent
Yes I've done this but not feeding 5v to the VCA (actually using another 911) and indeed it does change the linear/exponential output of the 911/902 combo.
I just wondered if there was a simpler way ...the 911 circuit looks pretty simple but alas I'm not electronically fluent to modify the circuit. I guess it actually may be quite complicated to achieve an exponential output otherwise they would have done it ?