[rohrpost] Paper-Synthesizer Workshop - PS110 Voltage-Controlled-Oscillator, 28Feb, Berlin

wolfgang spahn post at wolfgang-spahn.de
Mon Feb 16 21:06:07 CET 2015

Paper-Synthesizer 110 – Voltage-Controlled-Oscillator
by Antti Pussinen and Wolfgang Spahn

In this paper synthesizer workshop,we look into, and build a saw wave 
core for a one volt per octave oscillator.

A Voltage Controlled Oscilator, or vco, is the heart of any musical 
synthesizer. It usually forms the starting material for subtractive 
audio synthesis.
An analog VCO of this kind creates an audible waveform by charging and 
discharging a capasitor.
Voltage control enables one to control the frequency of the produced 
waveform in selected musical scale and play notes or a melody.

In a following workshop we build a wave shaper board to the VCO, adding 
the rest of the waveforms and a linear frequency modulation input.

-compatible with euro rack format
-built in power supply for stable voltage response and possibility to 
power over usb cable
-1V/octave response(configurable to 1v/hz)
-exponential frequency modulation with attenuation potentiometer
-sync input with sync level adjustment
-saw wave 10vpp output

additional features with wave shaper board
-sine, square, pulse width modulation and triangle outputs 10vpp
-pwm modulation cv input
-Linear frequency modulation with attenuatio potentiometer

All the tool and materials will be provided. The workshop will be held 
in German and English

Februar 28 2015, 11am – 5pm
Werkstatt Berlin
Mülhauserstr. 6. Hofgebäude 1. OG, 10405 Berlin
Costs: 50,00€ for the materials.
Registration: post<at>wolfgang-spahn.de




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