[sdiy] Walsh Functions/EN S-008

Pete Hartman pete.hartman at gmail.com
Thu Sep 14 23:06:02 CEST 2017

I dunno Don, sometimes I think maybe cicadas are doing something like that

I have raw images of the supplement now as well as a PDF generously
provided.  I am going through the images with photoshop and doing some
cleaning up of color artifacts and will probably create a revised PDF.  As
I said to Bernie a little bit ago, who knows, maybe I'll even be bold
enough to try to OCR and index it :-D

I also appreciate the experienced opinions about this topic.  I want to
hear for myself what the results are, but I don't have high hopes, I'm just
working through the curiosity I have about the topic.  Neil's page was very
helpful getting me over the block I was having about it too.



On Thu, Sep 14, 2017 at 3:05 PM, Donald Tillman <don at till.com> wrote:

> > On Sep 14, 2017, at 10:46 AM, Bernard Arthur Hutchins Jr <
> bah13 at cornell.edu> wrote:
> >
> > The simplest Walsh function is already a square wave, far from mellow.
>  The rest that make up a complete orthogonal set all have pulse-like
> autocorrelation functions and accordingly have a similar buzz.  No real
> variability in the mix. You have to WORK to get familiar waveshapes.
> And Walsh functions are not found in nature.
>   -- Don
> --
> Donald Tillman, Palo Alto, California
> http://www.till.com
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