[sdiy] Expo VCOs: some thoughts

[Andrew Simper]

Another option is to use any old cheap by not very linear core and then use
digital to linearise it. This could even be a parameter "how analog do you
want it?" and only partially correct for the linearity.

Cheers,

Andy
On Tue, 22 May 2018 at 07:31, Tim Ressel <timr at circuitabbey.com> wrote:

> Agreed, but the almighty customer wants analog. I wanted to use the
> PCM1681 to get 8 outputs: 4 triangle and 4 sine. Sigh.
>
>
> On 5/21/2018 1:01 PM, Gordonjcp wrote:
> > On Mon, May 21, 2018 at 09:18:10PM +0200, sleepy_dog at gmx.de wrote:
> >> Come on now kids, let's all keep calm, uncle Gordon is feeling
> >> trollish again!
> > Hey, it's a perfectly reasonable suggestion!  Custard wants it for
> > pennies, custard gets it for pennies.  Eight VCOs in a single package!
> > Real voltage control!  Just stick it all in an STM32 of some sort and
> > have the top sanded down and an SSM logo engraved on... :-D
> >
>
> --
> --Tim Ressel
> Circuit Abbey
> timr at circuitabbey.com
>
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> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy
>
-------------- next part --------------
   Another option is to use any old cheap by not very linear core and then
   use digital to linearise it. This could even be a parameter "how analog
   do you want it?" and only partially correct for the linearity.
   Cheers,
   Andy
   On Tue, 22 May 2018 at 07:31, Tim Ressel <[1]timr at circuitabbey.com>
   wrote:

     Agreed, but the almighty customer wants analog. I wanted to use the
     PCM1681 to get 8 outputs: 4 triangle and 4 sine. Sigh.
     On 5/21/2018 1:01 PM, Gordonjcp wrote:
     > On Mon, May 21, 2018 at 09:18:10PM +0200, [2]sleepy_dog at gmx.de
     wrote:
     >> Come on now kids, let's all keep calm, uncle Gordon is feeling
     >> trollish again!
     > Hey, it's a perfectly reasonable suggestion!  Custard wants it
     for
     > pennies, custard gets it for pennies.  Eight VCOs in a single
     package!
     > Real voltage control!  Just stick it all in an STM32 of some sort
     and
     > have the top sanded down and an SSM logo engraved on... :-D
     >
     --
     --Tim Ressel
     Circuit Abbey
     [3]timr at circuitabbey.com
     _______________________________________________
     Synth-diy mailing list
     [4]Synth-diy at synth-diy.org
     [5]http://synth-diy.org/mailman/listinfo/synth-diy

References

   1. mailto:timr at circuitabbey.com
   2. mailto:sleepy_dog at gmx.de
   3. mailto:timr at circuitabbey.com
   4. mailto:Synth-diy at synth-diy.org
   5. http://synth-diy.org/mailman/listinfo/synth-diy