==============================================================================
Paper-Synthesizer 110 – Wave Converter &/for the
Voltage-Controlled-Oscillator
==============================================================================
by Antti Pussinen and Wolfgang Spahn
In this paper synthesizer workshop,we look into, and build a wave shaper
board for our ps110 vco. The wave shaper converts saw wave to sine,
square and triangular waves. It also ads and input and control for
linear frequency modulation and pulse width modulation for square output.
It is also possible to build a vco core, if you missed our last workshop.
The wave shaper takes the saw wave of the oscillator core and makes
other waveforms on the same frequency.
Triangle wave is what you would expect from a tri oscillator.
Square wave is an analogue squ osc with sharp peaks in vertical parts of
the wave, making it super crispy sounding. It also has an pulsewidth
potentiometer and cv input and attenuation for pwm.
Sine wave is not the purest available but a cool sounding, bit squarish
sound with low 1st harmonic content, but harmonics increase on higher
harmonic frequencies.
=============================================================================
A Voltage Controlled Oscilator, or vco, is the heart of any musical
synthesizer. It usually forms the starting material for subtractive
audio synthesis.
An analogue VCO of this kind creates an audible waveform by charging and
discharging a capacitor.
Voltage control enables one to control the frequency of the produced
waveform in selected musical scale and play notes or a melody.
Features
-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
Please let us know if you are interested in building the oscillator core
or the wave shaper board.
==============================================================================
http://workshop.dernulleffekt.de/doku.php?id=paper-synth-110-mai2015:details
==============================================================================
Mai 09 2015, 11am – 5pm
Werkstatt Berlin
Mülhauserstr. 6. Hofgebäude 1. OG, 10405 Berlin
Costs: 50,00€
Registration: post<at>wolfgang-spahn.de
--
____________wolfgang spahn_______________________
____________kastanienalle 85_________10435 berlin
__Atelier:__gerichtstrasse 12-13_____13347 berlin
__030 39200060______________________ 0179 7935447
__<http://www.wolfgang-spahn.de>__________________
--
rohrpost - deutschsprachige Liste zur Kultur digitaler Medien und Netze
Archiv: http://www.nettime.org/rohrpost
http://post.in-mind.de/pipermail/rohrpost/
Ent/Subskribieren: http://post.in-mind.de/cgi-bin/mailman/listinfo/rohrpost/
