[sdiy] Patchable polyphonic synth with FM or AM transmission idea

cheater00 cheater00 cheater00 at gmail.com
Thu Apr 25 13:10:29 CEST 2019


Thanks, that's a great post. Easily the best blog I've read this month.

On Fri, Jan 4, 2019 at 11:28 PM <mskala at ansuz.sooke.bc.ca> wrote:
>
> On Thu, 3 Jan 2019, cheater00 cheater00 wrote:
> > - compared to digital: FM transmission has no delay (not even 1ms),
>
> Common misconception.  Anything that is frequency-selective, like the
> filters needed to split the channels in an FM receiver, necessarily has a
> group delay resulting in "latency."  Using analog techniques to do it
> doesn't magically allow you to break the laws of information theory; and
> although you can reduce the group delay to be small enough not to be a
> problem, the same can be said of digital and you can never reduce it to
> *zero*.  I covered this a bit in my Web log here:
>    https://northcoastsynthesis.com/news/frequency-latency-and-uncertainty
>
> --
> Matthew Skala
> mskala at ansuz.sooke.bc.ca                 People before tribes.
> http://ansuz.sooke.bc.ca/


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