Doepfer A-113 Subharmonic Oscillator User Manual

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doepfer
System A - 100
Subharmonic Generator
A-113
1
1. Introduction
Module A-113 (Subharmonic Generator) is an addi-
tional sound source that derives four independend
so-called Subharmonics from an incoming pulse si-
gnal. The module represents the sound generation
core of the
Mixtur-Trautonium
introduced by
Oskar
Sala (ref. chapter 6).
Subharmonic means in this context a sawtooth wave
whose frequency is derived from a master frequency.
The master frequency is divided by an integer 1...24 to
obtain the subharmonic. The subharmonics are avai-
lable as 4 single outputs as well as mix output with
adjustable level for each subharmonic.
The integer
divisor
for each subharmonic is set with
up/down buttons. The current divisors are displayed
with four 2-digit LED displays.
The combination of 4 divisors is called
mixture
. 4
mixtures form a preset. 50 presets can be stored and
called up within the module.
Two gate inputs are available to switch between the
4 mixtures within one preset (controlled by any gate
signals, e.g. from foot controllers).
Attention ! The A-113 module requires an additional
+5V power supply with 100mA (e.g. the separate +5V
power supply or the +5V low-cost adapter)
A-113
Subharmonic Generator
Freq.
In
Up
Mix
Out
Dow n
8.8.
Out 1
Level
1
Up
Dow n
8.8.
Level
2
Up
Dow n
8.8.
3
Foot
Ctr. 1
Foot
Ctr. 2
Preset
Up
Dow n
8.8.
Level
4
Out 4
Out 2
Store
Level
Out 3
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Summary of Contents

Page 1 - 1. Introduction

doepferSystem A - 100Subharmonic Generator A-11311. IntroductionModule A-113 (Subharmonic Generator) is an addi-tional sound source that derives fo

Page 2 - 2. Basic principles

A-113 Subharmonic GeneratorSystem A - 100doepfer10Fig. 8 : Schematic construction of the Mixtur-Trautonium sound generation(part 2 see next page)

Page 3

doepferSystem A - 100Subharmonic Generator A-11311

Page 4

A-113 Subharmonic GeneratorSystem A - 100doepfer12Fig. 9: A-113 as a complex sound sourceA-135VC-MixerAudioOutAudioIn 1A-113SHG4SingleOut 1XYZMODV

Page 5

doepferSystem A - 100Subharmonic Generator A-113137. Patch-SheetThe following diagrams of the module can help yourecall your own Patches. They’re d

Page 6

A-113 Subharmonic GeneratorSystem A - 100doepfer14

Page 7 - 5 Preset

A-113 Subharmonic GeneratorSystem A - 100doepfer22. Basic principlesThe Subharmonic Generator A-113 contains four ti-mes the following elements (se

Page 8 - 4. In / Outputs

doepferSystem A - 100Subharmonic Generator A-1133SubharmonicsThe subharmonics result from integer division ofthe frequency of the input signal.The t

Page 9 - 5. User Examples

A-113 Subharmonic GeneratorSystem A - 100doepfer4H The term "subharmonic" is not quite correct asthe A-113 outputs are sawtooth waveforms

Page 10

doepferSystem A - 100Subharmonic Generator A-11352. OverviewControls:1 Display : displays the current divisor2 Up : button to increase the diviso

Page 11

A-113 Subharmonic GeneratorSystem A - 100doepfer63. Controls1 DisplayThis is the 2-digit LED display that shows the currentvalue of the divisor.In

Page 12 - Subharmonic Generator

doepferSystem A - 100Subharmonic Generator A-11375 PresetWhile button 5 is operated one reaches the presetmode (see chapter 2 concerning the term pr

Page 13 - A-113

A-113 Subharmonic GeneratorSystem A - 100doepfer84. In / Outputs! InSocket ! is the subharmonic generator’s audio input.Connect up the signal you w

Page 14

doepferSystem A - 100Subharmonic Generator A-11395. User ExamplesSimulation of a Mixtur-TrautoniumThe Trautonium is an electronic musical instrumen

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