[sdiy] mm5837 are all over the place!

[R. Drake]

ray,

have you built one of these using the PC board artwork on your site yet?
thanks as always for the incredible resource.

lbd 

on 10/11/03 10:31 AM, Ray Wilson at rayw at csd.net wrote:

> I have posted a cool circtuit that gives rail to rail digital noise and
> works with a lowly 2N3904. Check it out.
> 
> http://atlas.csd.net/~rjwsoft/multinoisemodule_exp.html
> 
> It takes a couple of parts and a  dual op amp and BAM you get all the high
> amplitude non-cyclic noise you want. The upper left corner of the schematic
> is the noise generation part.
> 
> Ray
> 
> 
> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Harry Bissell Jr
> Sent: Friday, October 10, 2003 8:53 AM
> To: WeAreAs1 at aol.com; synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] mm5837 are all over the place!
> 
> 
> 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.
> 
> H^) harry
> 
> --- WeAreAs1 at aol.com wrote:
>> I'm guessing that the majority of MM5837's were sold
>> to drum machine makers.
>> That is, organ manufacturers who had beat boxes
>> built into their organs
>> (Thomas, Lowery, etc.).  If you're just using it to
>> make "snare drum" and "hi hat"
>> noise, with short little decay envelopes, then the
>> cyclic pattern repetition
>> would not be much of an annoyance.  On the other
>> hand, in synths?  Shame on
>> Moog, Sequential, and everyone else who wussed out
>> and used those in their synths
>> instead of amplifying selected noise transistors.
>> 
>> Michael Bacich