[sdiy] Imperfect VCO

[Ken Stone]

The "grinder" wave shaper on my site adds ringing on a per-cycle basis.

Ken

>In the VCO vote thread someone mentioned "imperfect VCOs"
>which exhibit among other things, reset ringing and
>waveshape change as one moves through the pitch range.  I
>think this is a feature of natural instruments as well.  I
>like this idea.
>
>It got me thinking if anyone has built VC waveshapers that
>do this sort of thing to a "perfect" VCO?
>
>Questions arise such as does the frequency of the ringing
>imperfection change with the VCO frequency?  If not, an LC
>circuit or gyrator could add this, it might be made voltage
>controlled with FET?  A VC nonlinear circuit could be used
>to modify a saw or tri slope.  
>
>An "Imperfectionizer"...
>
>Any schematics?  Ideas?
>
>Thanks all.
>
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_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au  
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