Hi
I've come up with a circuit that's supposed to split incoming line-level audio into three bands with a SVF, then have provision for external FX being added separately to each band (with dry and wet levels), then each band has it's own SVF again, then finally all of the bands are combined at the end in a mixer stage with a master volume.
I'm a bit (a lot) of a noob though, I don't really know what I'm doing yet, so I'd be really grateful if anyone of you knowledgeable fine gentlemen would be so kind as to have a quick look at my circuit and see if I'm going in the right direction.
I have tested all the individual bits on breadboards and they seemed to work OK, I'm just not sure if I've joined it all up right.
Also, bypass/decoupling capacitors, where should I put them in this circuit and what sort of values should I be looking at? (sorry I'm a noob) I don't want to cut out too much low end, nothing above 40hz really.
Thank you for reading!
I've come up with a circuit that's supposed to split incoming line-level audio into three bands with a SVF, then have provision for external FX being added separately to each band (with dry and wet levels), then each band has it's own SVF again, then finally all of the bands are combined at the end in a mixer stage with a master volume.
I'm a bit (a lot) of a noob though, I don't really know what I'm doing yet, so I'd be really grateful if anyone of you knowledgeable fine gentlemen would be so kind as to have a quick look at my circuit and see if I'm going in the right direction.
I have tested all the individual bits on breadboards and they seemed to work OK, I'm just not sure if I've joined it all up right.
Also, bypass/decoupling capacitors, where should I put them in this circuit and what sort of values should I be looking at? (sorry I'm a noob) I don't want to cut out too much low end, nothing above 40hz really.
Thank you for reading!
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There are several problems that cannot work as shown on the diagram. For example, the input buffer has the inputs reversed
and needs an input resistor to ground. Other op amps have only one input connected, or the inputs reversed, giving positive feedback.
Each dip package requires a decoupling capacitor from each supply pin to ground. Usually these are 0.1uF if there is a larger electrolytic
of value 10uf-100uF also on the supply line somewhere on the pcb. The Rg gain control should be 10k, not 100k.
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Lots of the op amps still have the inputs reversed, causing positive feedback.
The positive input is never connected to the output of the same op amp.
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oh how embarrassing 😱
thanks so much for your help!
I thought it was going too well so far. I think most of the errors are due to my poor copying of schematics (I've cobbled together 3 or 4 circuits I've found on the web). Hopefully I have the right sort of idea.
thank you again.
thanks so much for your help!
I thought it was going too well so far. I think most of the errors are due to my poor copying of schematics (I've cobbled together 3 or 4 circuits I've found on the web). Hopefully I have the right sort of idea.
thank you again.
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