[sdiy] Hadamard Transform Network

[Mattias Rickardsson]

Fantastic concepts:

"3.10 Testing of the Slalom Modes (Autoglide)"

"4.7 Slalomatic (Auto Slalom)
Suppose that the "Slalom" control is "high" (= 100 kOhms) and that the
switch "Autoslalom " is open. The input 1 of the inverter IC 3-1 is
thus positive..."

:-D

/mr


On 18 May 2017 at 16:25, Sarah Thompson <plodger at gmail.com> wrote:
> 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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