Simple OSC and Filter

[interrupt reQuest]

>Try Josh's site at ultranet, he's got the whole of the Penfold Book
<Electronic 
>Synthesiser Construction > on it, I know, I scanned it for him. It has a whole 
>series of simple circuits, VCO's, VCF's, VCA's ADSR's etc ...OK. the VCO's can 
>only be tuned accurately over three or four octaves (replace the 741 in the 
>Lin-Log converters with a TL071 and this goes up to five or six octaves), the 
>filters are a bit thin unless you stack a pair of them up together etc,
but.....
>The circuits are very simple with only easy-to-get stuff required...
>You'll only need a DMM to test, not an oscilliscope....
>They are cheap...
>They don't sound too bad considering how cheap they are.,..
>They do use 1V/Oct so they'll fit in with other stuff that does..
>
>chrisc 
>

cool, what is josh's site url? =)