[sdiy] Digital Noise, FYI

[Harry Bissell]

for the intended use, such as a source for room equalizing instruments etc, the implementation was OK. It
just wasn't meant for music use. The big question is, how did Sequential's engineers accept such a piece
of crap. Did they think that no one would notice, or were they too far down the road to re-design. In a $3500
instrument its totally unacceptable.

H^) harry   (not misssng those 'authentic' sounds... btw :^)



----- Original Message -----
From: Magnus Danielson <magnus at rubidium.dyndns.org>
To: synth-diy at dropmix.xs4all.nl
Sent: Wed, 16 Feb 2011 09:58:49 -0500 (EST)
Subject: Re: [sdiy] Digital Noise, FYI

On 02/16/2011 02:38 PM, Harry Bissell wrote:
> hmmm...
>
> When I got my ProphetV, it used the dreaded (and feared) MM5837 noise source.  I tried to make an exact
> replacement with analog techniques, but could not get the 0>15V "all or nothing" voltage swing. I suppose
> with my superior skills these days, a comparator would have done the trick...
>
> A CD4006 based solution was exactly what the doctor ordered, it did not mess up the factory presets in the least, but
> removing the MM5837 did eliminate the (your choice)<ticking time-bomb>  <roaring freight train>  <chinese water torture>
> from the sound...

Oh, so you can't get those autentic sounds anymore? >:-)

> The digital techniques have their place. I don't really care about 'random'... a repeat every few hours or so doesn't
> get too much of my attention :^)

The main problem they had was that they where too short. Bad 
implementation, but not necesserilly a bad solution as such.

Cheers,
Magnus
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-- 
Harry Bissell & Nora Abdullah 4eva