dSPACE XODULAR Bedienungsanleitung
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XODULAR!
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pure data modular !
synthesizer system!
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user’s guide!
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INTRODUCTION: ABOUT THE XODULAR PURE DATA MODULAR
SYNTHESIZER SYSTEM!4!
USER INTERFACE AND SIGNAL FLOW!5!
USER INTERFACE:!5!
SIGNAL FLOW:!6!
OSCILLATORS!7!
VOLTAGE CONTROLLED OSCILLATOR - VCO-SINE:!7!
VOLTAGE CONTROLLED OSCILLATOR - VCO-VOWEL:!8!
VOLTAGE CONTROLLED OSCILLATOR - COMPLEX-OSCILLATOR:!9!
VOLTAGE CONTROLLED OSCILLATOR - VCO-3WAVES:!10!
VOLTAGE CONTROLLED OSCILLATOR - VCO-DRUM:!12!
MODULATION!14!
LOW FREQUENCY OSCILLATOR - LFO:!14!
ENVELOPE GENERATOR - ENV-AD:!15!
DUAL RANDOM CV GENERATOR - 2XRANDOM:!16!
DUAL SAMPLE & HOLD - DUAL-S&H:!17!
CLOCKS, LOGIC & UTILITIES!18!
VOLTAGE CONTROLLED CLOCK - CLOCK:!18!
CLOCK DIVIDER - CLK-DIVIDER:!19!
DUAL PROBABILITY LOGIC - PROBABILITY:!20!
FOUR TO ONE SEQUENTIAL SWITCH - 4->1-SWITCH:!21!
ONE TO FOUR SEQUENTIAL SWITCH - 1->4-SWITCH:!22!
MODAL QUANTIZER - QUANTIZER:!23!
SEQUENCERS!24!
VOLTAGE CONTROLLED SEQUENCER WITH 5 STEPS - 5 STEPS:!24!
16 STEP TRIGGER SEQUENCER - 16-TRIGS:!26!
MIXERS & VCAs!27!
DUAL VCA/MIXER - VCA/MIXER:!27!
3 CHANNEL MIXER - MIXER/ATT:!28!
3 CHANNEL POLARIZER/MIXER/ATTENUVERTER - POLAR-3:!29!
4 CHANNEL OUTPUT MIXER - MIX-OUT:!30!
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EXAMPLE PATCHES!32!
PATCH 1: MAKING A SOUND!32!
PATCH 2: ADDING AN ENVELOPE!33!
PATCH 3: ADDING RHYTHMIC COMPLEXITY AND MODULATION!34
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INTRODUCTION: ABOUT THE XODULAR PURE DATA
MODULAR SYNTHESIZER SYSTEM!
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The XODULAR is a virtual modular synthesizer environment in Pure Data. (To run it you
need an installed copy of Pure Data-Extended). The XODULAR consists of twenty
modules that users can copy/paste in any combination to create their own modular
system. If familiar with Pure Data, one can expand on modules or build own additions.
However, there is no need to be familiar to use the XODULAR. Acquiring some basic
understanding of the user interface and signal flow should be enough to get patching. (See
page 5 in the XODULAR manual)!
This system came about over the course of a year. It is very much flavoured by my
creative decisions and patching-style. It has a lot of foundational modular building blocks
because I like patching complexity from simple tools. I really hope some other people can
get some enjoyment out of this system and I do feel it is open ended enough to light up
people's creativity.!
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Yours Sincerely / Johan!
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4
USER INTERFACE AND SIGNAL FLOW!
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USER INTERFACE:!
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First of all: Download a copy of Pure Data Extended at www.puredata.info and install on
your hard drive!
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Open the XODULAR.pd file in Pure Data-Extended!
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Choose Audio Settings in pure data. Sound out from the XODULAR is hardwired from the
MIX-OUT module to channel 1 and 2 on the user’s sound card.!
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Understand the difference between EDIT MODE and PERFORMANCE MODE in Pure
Data. To make patch connections, one has to be in EDIT mode and to use the control
interface one has to be in PERFORMANCE MODE (Cmd+E toggles between the two
modes)!
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All INPUTS are at the top of the module and all the OUTPUTS are at the bottom. Infinite
amount of patch connections can be drawn from the same output so there is no need for
multiples in the system. !
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In EDIT mode, highlight any module and copy (Cmd-C) it and paste (Cmd-V) to duplicate
it.!
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Shift+click allows you to fine tune the settings of a knob/slider with higher resolution.!
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For a deeper understanding of Pure Data please refer to the Floss Manuals ( http://
en.flossmanuals.net/pure-data/ ) or the helpful Pure Data Community on Facebook.!
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SIGNAL FLOW:!
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There are three types of signals in the XODULAR system: audio, cv and trigger/gate/pulse/
clock. General rule in the XODULAR is that all connections are possible. Or, at least, just
like in any hardware modular system - all connections might not work but there’s no harm
in trying. Most audio modules can go into sub-audio and the LFO goes into audio-rate so
there’s no fixed way to use any module. Triggers are normally used to trigger or sync
modules but can be used for modulation or audio too. !
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Pure Data will stop producing sound if a DSP feedback loop is detected. So feedback
patches that works like a charm with hardware is trickier in this environment. !
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SAVING PATCHES:!
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The system automatically saves and recalls the position of the knobs, sliders and toggles
when you save the patch. This way, you can save a patch like any file on your computer.!
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BE CAREFUL: There should be no unpleasant audio surprises or sudden raises in
volume, BUT modular is modular and dsp is dsp so be careful. If making an ‘esoteric’
connection, remove headphone or set master volume low just to be safe and not hurt your
ears. !
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For an in-depth explanation of each module continue reading the manual or skip to the
page for a specific module. See the EXAMPLE PATCHES part of the manual for some
inspiration.!
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OSCILLATORS!
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VOLTAGE CONTROLLED OSCILLATOR - VCO-SINE:!
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The VCO-SINE is a sine wave oscillator with an integrated cosine
wavefolder. The range is from 0.2Hz - 2093Hz and can be used for
audio, low frequency modulation and audio rate modulation. !
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CONTROLS:!
PITCH - controls the pitch of the VCO-SINE. The PITCH knob becomes an offset control
when the parameter is being modulated.!
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FOLD - controls the amount of wave folding !
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FM - attenuator to control the amount of incoming signal from the FM input.!
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INPUTS: !
PITCH - inlet for controlling the pitch of the VCO. The PITCH knob becomes an offset
control when the parameter is being modulated.!
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FOLD - inlet for modulating the fold amount of the wavefolder. The FOLD knob becomes
an offset control when the parameter is being modulated.!
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FM - Inlet for external Frequency Modulation. The amount of the incoming signal can be
attenuated with the FM knob.!
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OUTPUTS:!
FOLD - Outlets the folded sinewave. The wave will be completely quiet if the FOLD knob is
set fully CCW.!
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SINE - Outlets a pure sine wave not affected at all by the wavefolder circuit.!
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VOLTAGE CONTROLLED OSCILLATOR - VCO-VOWEL:!
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The VCO-VOWEL is a sawtooth oscillator that runs through a series
of bandpass filters that are set at values that resembles the vowels
of human speech. The range is from 0.2Hz - 2093Hz and can be
used for audio, low frequency modulation and audio rate modulation. !
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CONTROLS:!
PITCH - controls the pitch of the VCO-VOWEL. The PITCH knob becomes an offset
control when the parameter is being modulated.!
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FORMANTS - scans through the bandpass filters and morphs smoothly between different
vowel-sounds!
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FM - attenuator to control the amount of incoming signal from the FM input.!
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INPUTS: !
PITCH - inlet for controlling the pitch of the VCO. The PITCH knob becomes an offset
control when parameter is being modulated.!
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FORMANTS - inlet for modulating and scanning through the bandpass filter formants. The
FORMANTS knob becomes an offset control when the parameter is being modulated.!
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FM - Inlet for external Frequency Modulation. The amount of the incoming signal can be
attenuated with the FM knob.!
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OUTPUTS:!
OUT - VCO-VOWEL output!
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VOLTAGE CONTROLLED OSCILLATOR - COMPLEX-
OSCILLATOR:!
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The Complex-Oscillator is a dual oscillator with
internal Frequency Modulation and Amplitude
Modulation routings. The range is from 0.2Hz -
2093Hz and can be used for audio, low frequency
modulation and audio rate modulation.!
OSC1 is a sinewave with an integrated cosine
wavefolder. It has dedicated knobs for pitch
(OSC1), wavefolding(FOLD) and Frequency
Modulation from OSC2(FMI). !
OSC2 is a sawtooth generator that can produce
three sawtooth waves slightly detuned from each
other. It has dedicated knobs for controlling
pitch(OSC2), the amount of detune between the
waveforms(WIDTH) and the Amplitude Modulation
!!!!! from OSC1(AMI). !
INPUTS: !
OSC1 - inlet for controlling the pitch of Oscillator 1. The OSC1 knob becomes an offset
control when the the parameter is being modulated.!
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FOLD - inlet for modulating the fold amount of Oscillator 1's wavefolder. The FOLD knob
becomes an offset control when the parameter is being modulated.!
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FMI - inlet for modulating the amount of Frequency Modulation being sent from OSC2.
The FMI knob becomes an offset control when the parameter is being modulated.!
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OSC2 - inlet for controlling the pitch of Oscillator 2. The OSC2 knob becomes an offset
control when the the parameter is being modulated.!
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WIDTH - inlet for modulating the amount of detuning on Oscillator 2. The WIDTH knob
becomes an offset control when the parameter is being modulated.!
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AMI - inlet for modulating the amount of Amplitude Modulation being sent from OSC1. The
AMI knob becomes an offset control when the parameter is being modulated.!
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OUTPUTS:!
OSC1-OUT - Oscillator 1 output!
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OSC2-OUT - Oscillator 2 output!
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SUM-OUT - Oscillator 1 and Oscillator 2 mixed together!
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VOLTAGE CONTROLLED OSCILLATOR - VCO-3WAVES:!
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The VCO-3WAVES is an oscillator that produces a
trianglewave, a pulsewave and a sawtooth wave. The
waves have separate outputs as well as a mixed output.
The range is from 0.2Hz - 2093Hz and can be used for
audio, low frequency modulation and audio rate
modulation. It has a dedicated knob for controlling the pitch
of all three waveforms (PITCH). Additionally, each wave
has a dedicated knob to affect its shape and timbre in some
way. !
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CONTROLS:!
PITCH - controls the pitch of the VCO-3WAVES. The PITCH knob becomes an offset
control when the parameter is being modulated.!
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WRAP - controls the amount of wavefolding/wrapping on the triangle wave. The WRAP
knob becomes an offset control when the parameter is being modulated.!
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PWM - controls the pulse width of the pulse wave. The PWM knob becomes an offset
control when the parameter is being modulated.!
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WIDTH - controls the amount of detuning of the sawtooth wave. The WIDTH knob
becomes an offset control when the parameter is being modulated.!
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FM - attenuator to control the amount of incoming signal from the FM input.!
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INPUTS: !
PITCH - inlet for controlling the pitch of the VCO. The PITCH knob becomes an offset
control when the parameter is being modulated.!
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WRAP - inlet for modulating the fold amount on the triangle wave. The WRAP knob
becomes an offset control when the parameter is being modulated.!
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PWM - inlet for modulating the pulse width of the pulse wave. The PWM knob becomes
an offset control when the parameter is being modulated. !
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