[sdiy] Digital accumulator VCO core?

cheater cheater cheater00social at gmail.com
Wed Feb 10 09:16:26 CET 2021


Can you tell me more about this? What does the PCB look like, what's
the cost? Is this an open source project? Can I buy it from you?
Thanks

On Wed, Feb 10, 2021 at 12:08 AM Mike Bryant <mbryant at futurehorizons.com> wrote:
>
> I think if you're going to do complex additive synthesis then staying all digital until a single final DAC is the more sensible approach.  My system has over 1200 sinewave voices on a single small PCB, and I can link up to a dozen such boards.  It probably could create most sounds short of the human voice but the problem is how to control it creatively in a reasonable timescale.
>
>
> -----Original Message-----
> From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of Aaron B.
> Sent: 09 February 2021 22:33
> To: synth-diy at synth-diy.org
> Subject: Re: [sdiy] Digital accumulator VCO core?
>
> On Tue, 9 Feb 2021 17:21:02 -0500
> Daniel Roberts <danmroberts at gmail.com> wrote:
>
> > Along these lines, I'm curious if it's possible to digitally generate
> > a triangle wave at half the needed frequency via a DAC, but then
> > double the frequency in hardware via a full-wave rectification
> > followed by DC-removal frequency doubling circuit? Via chaining of
> > frequency doublers, could someone get away with generating digital
> > signals at a relatively low sample rate with such a scheme?
>
> I would guess that the output would rapidly devolve into a stepped waveform, especially at higher frequencies.
>
>
> But you did give me an unrelated idea, analog tricore VCO + a series of multiplying waveshapers + tri to sine converters... a lot of parts, but a potentially interesting form of additive synthesis.
>
> --
> Aaron B. <aaron at zadzmo.org>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy
> Selling or trading? Use marketplace at synth-diy.org
>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy
> Selling or trading? Use marketplace at synth-diy.org




More information about the Synth-diy mailing list