Hello

How would I make analog logic to addres the 6 latest keys to the 6 vco's

Edit: no aftertouch/velocity detection

 

I don’t know know you would, but I wouldn’t. I would use digital logic, or better yet, a microcontroller.

 

I don’t know know you would, but I wouldn’t. I would use digital logic, or better yet, a microcontroller.

I want to do it like old polysynths.
But cant find any resources that would help me.

 

What to do mean by ”analog logic”?

 

What to do mean by ”analog logic”?

I mean how would i give priority to the last 6 that are pressed and sent the appropriate cv to the oscillators

 

I mean how would i give priority to the last 6 that are pressed and sent the appropriate cv to the oscillators

I understood that, but how are you distinguishing “analog logic” from, say digital logic? What do you expect the circuit to look like? What sort of components?

 

I understood that, but how are you distinguishing “analog logic” from, say digital logic? What do you expect the circuit to look like? What sort of components?

Opamps transistors resistors caps diodes...

 

Could you give some examples of synthesizers that used analog components for handling polyhpony?

 

Although you could make gates from opamps, it would then be a digital circuit, and far less efficient than using digital gates. All digital circuits use analog components in their implementation.

 

Although you could make gates from opamps, it would then be a digital circuit, and far less efficient than using digital gates. All digital circuits use analog components in their implementation.

And the BoM would grow very fast. That’s why I asked for examples. I couldn’t think of any, though I didn’t do too much with polyphonic synth circuits at the time. We used Polymoogs, Fairlights, Rolands, and others—but they were appliances. The circuits I touched were for modular synths like this one from PAiA:



I have some good memories of playing around with the discrete oscillators, envelope followers, VCAs, VCFs, ring modulators… a bunch of modules and the complicated and messy patches.

 

Could you give some examples of synthesizers that used analog components for handling polyhpony?

Ok i will try digital logic