To: 'Analogue Heaven' analogue@hyperreal.org,
From: "Caloroso, Michael E" CalorosoME@corning.com,
cc:
Subject: RE: [AH] The Source of The Source
Date: Mon, 23 Aug 1999 08:44:34 -0400

---

> The envelopes are d*g*t*ly generated.
>
Not quite... each EG in the Source is a voltage controlled integrator (VCI? :). The time constant for the integrator is controlled by a voltage from the DAC, and the CPU monitors each stage to switch between transitions. It's a nice snappy analog EG that is d-t-g-lly controlled. It's actually a clever design.

> Both the Source and the MemoryMoog use a d*g*t*l noise generator chip.
>
I wouldn't classify the 5837 as d*g*t*l, it's still an analog IC, but it certainly isn't a discrete noise source ala Minimoog. There's a factory service bulletin that improves the 5837 noise source that gets rid of the "heartbeat" cyclic sound, check out http://www.ne.jp/asahi/interlogic/oku/memorymoog/mmoog.htmlg IC, but it certainly isn't a discrete noise source ala Minimoog. There's a factory service bulletin that improves the 5837 noise source that gets rid of the "heartbeat" cyclic sound, check out http://www.ne.jp/asahi/interlogic/oku/memorymoog/mmoog.html


I have this in my Memorymoog and it's a MUCH better noise source. Actually any Moog that uses the 5837 can benefit from this improvement.

The Source for great for bass lines, a little weak for leads, while the Memorymoog is the better lead machine, but that li'l Minimoog just has this edge in leads and bass over both machines.

MC

"Do not take the OBMx swimming or play it in the rain" - warning label on rear of OBMx

Opinions (and mistakes) expressed herein are my own and not those of my employer.