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Analog Physical Modeling Synthesis and the AN200
Appendix
Analog Physical Modeling Synthesis and the AN200

At the heart of the AN200’s stunning, dynamic analog-like sound is a highly sophisticated

and versatile tone generating method — the Analog Physical Modeling Synthesis system.

We won’t try to explain how Analog Physical Modeling works — that would take several

pages. Besides, you can hear for yourself the enormous power and punch this system

delivers. In this section, we’ll just briefly outline the structure of the AN200, and show you

what happens to the sound within the AN200 system as it’s generated, processed and

enhanced.

Oscillators, Filters and Ampliers

Very simply, there are three basic elements of sound: pitch, tone (or timbre) and volume (or “amplitude” in

synth-speak). Within the AN200, these three elements are created or controlled by the VCO (oscillator), VCF

(filter), and VCA (amplifier).

And that’s basically how the AN200 creates sound. Of course, there are a few other elements in the system

— as you can see here:

Control blocks in italics are functions that can only be changed or adjusted by using the
included AN200 Editor software. They cannot be controlled from the panel of the AN200
itself.
VCO VCF VCA OUT
The oscillator creates the source pitch
(and also the basic timbre, depending on the waveform)
The amplifier determines the volume
The filter controls the timbre
FEG AEG
Distortion
Effects
3-Band EQ
VCF
VCO1
Oscillator Sync
FM Oscillator
Sync
MIXER
LFO1,
LFO2
Ring Modulator
Noise
Feedback
Slave
VCO2
Master
PEG
VCA