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...

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:

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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.