Re: Re: [sdiy] Sound samples for Obesifier Waveform Animator are up

Roman modular at go2.pl
Fri Aug 8 10:32:17 CEST 2003


Tim Ressel wrote:
>Some ideas for mods:
>The LFOs could easily modofied for CV inputs...
>Make the local oscillators adjustable??
>Replace the output mixing resistors with pots??

my ideas for mods:
CV of all LFOs - put NMOS/PMOS pair between U2:B-7 and R18A. Gates together to opamp's output, sources together to the resistor, drains to CV+ and CV- respectively. Then one common inverting amplifier generating CV- from CV and it should work OK for several octaves.

What if we skip saw2tri rectifiers, so then we can skip U2:C in every section. I was even thinking of discrete version, where U2:D would be replaced by single transistor (signal to base, LFO to emmiter). And discrete LFOs too...


>
>Any way you slice it, this is a 'must have' module!

your damn right!

>
>So who's making PCBs??  :-)

I am
but not so soon

Roman



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