[sdiy] Syncable digital noise source.

[Loscha]

I think what you're after is called in the computer programmed world
as "Seeded Random".
You supply a complex algorithm with a startup condition.
In ye olde basic days you'd do something like RAND(0)=TIMER or what
have you to seed it with the milliseconds since start up of computer.

 Maybe an 8-way DIP switch and some complex logic would do the trick?

-ErJ

On Tue, Jul 1, 2008 at 10:21 PM, Michael Zacherl
<sdiy-mz01 at blauwurf.info> wrote:
>
> On Jul 1, 2008, at 1:31 AM, Tom Wiltshire wrote:
>
>> Anyway, since then, I've tried putting a reset input on my PIC noise
>> source. Then I fed a squarewave from an SH101 into the reset input. The
>> result was not worth the limited effort, in my opinion. Whilst the
>> formant-shaping produces noise with certain "flavours", it didn't produce
>> much that sounded good to my ears. Obviously you can start the LFSR in many
>> different places and get many different flavours, so perhaps I didn't
>> explore enough. I wasn't encouraged to by the results I got. The sound isn't
>> pitched enough to be really useful, and as unpitched noise goes, pure white
>> or pink have a smoother quality whilst the synced noise often sounded
>> "spattery" and uneven.
>
> Hi Tom,
>
>   how about in the LF-range, e.g. when using an S&H and syncing at very slow
> speeds?
>
> Would it be possible to sort of loop a random pattern?
>
>   :-) Michael.
>
>
>
>
> --
> hear the colours of noise: http://blauwurf.at
>
>
>
>
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