[sdiy] Psych Tone

[John P Shea]

Nice work!

I found that (iOS/Chrome) introducing Decay caused clicking on the output,
couldn’t relate this issue (feature?) to other parameters.

Just on iPhone speaker out btw.

Regards,
JPS

On Sun, 6 Jan 2019 at 3:08 am, Donald Tillman <don at till.com> wrote:

> Hiya,
>
> I just whipped up a simulation of the Psych Tone in JavaScript.  Please
> enjoy:
>
>     http://till.com/articles/psychtone/
>
> (It's still a little rough.)
>
> "WTF is a Psych Tone?"
>
> The Psych Tone composes and plays musical sequences based on a Linear
> Feedback Shift Register.  Don Lancaster invented and published (and named)
> it in the February 1971 issue of Popular Electronics magazine.
>
> The original article is here:
>
>     https://www.tinaja.com/glib/psyctone.pdf
>
> As hobbyist electronic music projects go, it's pretty impressive.  A 6-bit
> LFSR with variations, VCO, envelope generator, voltage controlled
> attenuator, and some logic to introduce rests, all in one package.
>
> ---
>
> Previously I wrote a JavaScript simulation of Marvin Minsky's Triadex
> Muse.  That's here:
>
>     http://till.com/articles/muse/
>
> Interesting update: I've been contacted by the Barbican Centre in London.
> They're putting together an exhibition for this summer called "AI - More
> than Human" and it will feature a physical Muse, under glass, with my
> software simulation running on an iPad next to it.  This way museum
> visitors can see the actual Muse, and try out the simulation, and even
> "take it home".
>
>   -- Don
> --
> Donald Tillman, Palo Alto, California
> http://www.till.com
>
>
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