[sdiy] Analysis of frequency variation in analogue synths

[Nicholas Gregorich]

On May 3, 2007, at 7:49 AM, Ian Fritz wrote:

> At 03:06 AM 5/3/2007, Paul Perry wrote:
>> Just adding white noise to signals never
>> makes them interesting, because the brain is designed to filter it  
>> out.
>
> But, once again, period-synchronized noise bursts *do* give an  
> "analog feel" to a signal, at least according to the people who did  
> the experiment.  Of course, it is unlikely that a synth VCO would  
> have this property.
>
> Does anyone have a strong feeling as to whether the CEM VCO has  
> this analog warmth?

I've owned a Roland SH-101 (single CEM3340) and Akai AX60 (6 voice  
CEM3394 VCO/VCF/VCA chip) and concluded the CEM oscillators were not  
as warm as other VCOs found in the SH-3a or Andromeda, or as analog  
(but not necessarily warm) as an Odyssey VCO.

On the other hand I played a MemoryMoog+ and thought it had a  
fantastic sound, though I never brought it home for late night for  
comparison to other gear.

I am interested in other people's opinions of CEM VCOs.

Nick.