basic synthesizer circuit

Have you tried this?

-- Joe

Tell us what kind of frequency ranges you'd like to cover, if you just need a sine wave output or modulation or other waveforms, etc...

I am only just learning about synthesisers apparently there is sinewave, sawtooth and squarewave plus others you may know of I am looking for a simple circuit to start off with to produce a range of sounds that I can build on once I understand them I am more proficient at digital electronics than analogue electronics

thanks for all the quick replies any more help would be greatly appreciated

Have a look here for some circuits:

If you can find a copy, try to get a hold of the book "Musical Applications of Microprocessors" by Hal Chamberlin - copies show up on Ebay from time to time. Though it's a couple decades old, the book has lots of analog synth circuits, and most importantly good explanations of exactly how the circuits work.

The Theremin comes to mind...

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There was an excellent series called "Electronotes" published by a physicist named Bernie Hutchings back in the 1980's that you might be able to dig up somewhere. It was a treasure trove of synthesizer theory and practical circuit examples of VCOs, VCFs, VCAs, ADSR EGs etc.

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Well. It turns out he's still in business here:

and I misspelled his name. It's Bernie Hutchins and he's a recently retired EE prof from Cornell. Some of his stuff is pretty old, but analog synthesis hasn't really changed that much.

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thanks for all the help, I'll get round to it all sometime

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WOW!!! Thanks for posting that URL. Nice site.