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Analog Physical Modeling Synthesis and the PLG150-AN Tone Generator
LFO 1, 2 and PEG, FEG
The LFO 1 and LFO 2 sections provide a sophisticated set of modulation possibilities, allowing you
to modulate the VCO 1, VCO 2, VCA, and VCF sections in various ways and degrees.
The LFO can be used to control:
Pmod (pitch of the oscillator)
Fmod (Cutoff frequency of the filter)
Amod (depth of the amplifier, or volume)
This gives you enormous flexibility in controlling and shaping the sound.
The PEG (Pitch EG) section lets you control the pitch of the VCO 1 and/or VCO 2 over time, with a
conventional envelope generator. The FEG (Filter EG) gives you similar control over how the filter
affects the sound over time. On the PLG150-AN, the PEG and FEG give you additional modulation
control sources, providing the comprehensive and flexible control as found on vintage analog synthe-
sizers — yet without the expense of additional modules and the complexity of dozens of patch cords.
Effects
The PLG150-AN also features an Effects section that includes Distortion and 3-Band EQ. These
effects give you further sonic control over the AN voice, letting you apply and adjust distortion, and
make detailed equalization settings.
12
Example
Oscillator
Sync
Pitch of the master
oscillator (determines the
oscillator (determines
pitch of the overall sound).
of the overall sound).
PWM (Pulse Width Modulation)
Sync Pitch (pitch of the slave oscillator)
FM Depth
FEG
Changing the
harmonics
over time.
Pitch of the slave
the timbre or tone
Opening and
closing the filter
over time.
Filter cutoff frequency
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