[sdiy] mm5837 are all over the place!

[Scott Stites]

Yeah, the DSC2000 provides a pretty nice sweep from the SN76477's noise
generator.

An application that's taken this concept to the nth degree is Ken Stone's
CGS 31 Digital Noise module, which uses a 4006 shift register, has an
internal linear VCO for sweeping with CV, an external clock input so you can
sweep it with a VCO, and it has white, pink, and two separate, unique random
outputs.

http://www.cgs.synth.net/modules/cgs31_digital_noise.html

Cheers,
Scott


----- Original Message -----
From: <WeAreAs1 at aol.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Friday, October 10, 2003 3:52 PM
Subject: Re: [sdiy] mm5837 are all over the place!


>
> In a message dated 10/10/03 7:53:16 AM, harrybissell at prodigy.net writes:
>
> << I did a longer shift register in my Prophet V...
> the amplified noise transistors would have had a
> vastly different amplitude (not digital with rail to
> rail swings) and messed up the factory patches. >>
>
> I really like what happens to the sound of those shift-register noise
> generators when you sweep the clock frequency.  It has a very pleasant,
swirly
> phasing/flanging/filtersweep-like quality - but also really nothing like
phasing,
> flanging, or filter sweeping.  I'm pretty sure that John Blacet's Dark
Star
> Chaos module lets you do this, and provides a modulation input for this
purpose
> (it uses the old TI SN76477 sound effect IC).  I tried this out when I was
> messing around with the TI IC, and was shocked at how cool it sounded,
although the
> effective sweep range was not as wide as I would have preferred (using the
> chips internal noise clock).  Did you ever experiment with sweeping the
clock
> frequency on your own shift register noise generator?
>
> Mike B.
>