Re: [sc-users] make your digital oscillators sound like a moog!

["Sean Costello" <seancostello2003@xxxxxxxxxxx>]

Also, for the first few decades of analog synth development, the engineers
tried to produce MORE stable VCOs. The Moog 901 VCO may have a great sound,
but try using one on stage for a few hours. In general, the industry moved
towards using stable oscillator chips from SSM, and CEM, as soon as they
were available. The jittery VCO of the Moog Modular was not something to
emulate. However, history has moved in such a way that the earliest,
dirtiest analog synths, such as the Moog Modular, the Minimoog, and the
Synthi AKS, are the most desirable.

Emulating a more modern analog synth in digital, such as the Rev 3.x Prophet
5, is not too difficult, as the oscillators are stable and the filters are
fairly linear. It is the older dirty synths that are hard to model, as you
need to have nonlinear filters (much more CPU), as well as strange
oscillator behavior that may or may not be random.

Sean Costello

----- Original Message ----- 
From: "Sean Costello" <seancostello2003@xxxxxxxxxxx>
To: "SuperCollider users mailing list" <sc-users@xxxxxxxxxxxxxxx>
Sent: Wednesday, January 04, 2006 10:26 AM
Subject: Re: [sc-users] make your digital oscillators sound like a moog!


> The problem is that most people who have tried to figure out how to
emulate
> the behavior of a Moog modular synth haven't ever put their hands on a
real
> one. Most people who build their own synths use a +- 15 volt power supply,
> with nice modern regulation. The Moog modular (apparently) had a very
noisy
> power supply, working at lower voltages, so more noise would come through
> the power supply. In the Moogs and other synths, the reference voltage for
> the sawtooth oscillator reset comes from the power supply without much
> regulation, so noise in this reference voltage would cause the oscillator
to
> reset at slightly different levels each time. This seems like it would
> slightly affect amplitude as well as frequency, but I'm not the guy with
the
> expensive modular synth and the scope, so I have no way of verifying this.

>
> Sean
>
> ----- Original Message ----- 
> From: "Tom Gersic" <sc@xxxxxxxxxx>
> To: "SC Users List" <sc-users@xxxxxxxxxxxxxxx>
> Sent: Tuesday, January 03, 2006 8:46 PM
> Subject: Re: [sc-users] make your digital oscillators sound like a moog!
>
>
> > >
> > >
> > >simply add a bit of jitter to the pitch, or so it says here.
> > >>
http://matrixsynth.blogspot.com/2006/01/why-moog-sounds-like-moog.html
> > >
> >
> > So it took ~43 years for someone to think of plugging a 901 VCO into an
> > oscilloscope? ;-)
> >
> > Tom
> > _______________________________________________
> > sc-users mailing list
> > sc-users@xxxxxxxxxxxxxxx
> > http://www.create.ucsb.edu/mailman/listinfo/sc-users
>
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