[sdiy] Hadamard Transform Network

[Sarah Thompson]

Paydirt! I found a page with PDFs including the top octave synthesizer and
keying matrix for the Helios!

http://www.batesuk.freeola.com/wersi/manuals/heliosw2.htm

It was a weird feeling reading those again after *coughsplutter* years!

On Wed, May 17, 2017 at 3:12 PM, Elain Klopke <functionofform at gmail.com>
wrote:

>
> I'm disappointed that this thread never produced a list of Hadamard Series
>> based synthesizers.
>>
>
> I concur. Though I took the lack of results as a sign that this has been
> lost to time or not many people found it interesting/economical enough to
> persue. Once I get paid, I'm probably going to get the parts necessary to
> breadboard the circuit suggested in the article and see what fun can be
> had.
>
>
>> That Wersi Helios set of phase-aligned squares seems a lot like a large
>> subset of the Hadamard Series. Some of the Hadamard partials are not
>> phase-aligned (they're phase-shifted) and some are decidedly not square. It
>> seems like it might be reasonable to call the Wersi Helios a Hadamard synth.
>>
>
> Schematics of the Helios would also be appreciated. My Google-fu is not
> terribly strong on that..
>
> -Elain
>



-- 
[s]
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