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Plg150-an Tone Generator Block Diagram; Vco - Yamaha PLG150-AN Owner's Manual

Analog physical modeling plug-in board modular synthesis plug-in system.
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Analog Physical Modeling Synthesis and the PLG150-AN Tone Generator

PLG150-AN Tone Generator Block Diagram

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VCO1

Oscillator Sync
Master
Slave
Oscillator
FM
Sync
VCO2
VCO
The VCO module is where the original sound waveform is generated. In general, the VCOs of analog
synthesizers feature the simple waveforms shown below.
Basic sawtooth waveform
In theory, these waveforms are very simple; in the real world, they're not so simple. Because of the
characteristics of electronic circuits, all analog synthesizers introduce subtle imperfections into the
waveform. These imperfections result in slightly rounding off the edges of the wave, or adding noise,
and other artifacts — and they give each synthesizer its own special, unique sound.
Although a single oscillator is enough to generate the basic sawtooth, pulse (square) or other waves
required for different types of musical instrument sounds, the PLG150-AN's VCO module provides
far greater flexibility. The PLG150-AN's digital VCO creates mathematically exact waveforms.
LFO1 & LFO2
Ring
Modulator
MIXER
Noise
Saw (Sawtooth)
Basic pulse waveform
FEG
AEG
VCF
VCA
Feedback
Pulse (Square)
Basic triangle waveform
Effects
Distortion
3-Band EQ
Triangle
7

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