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 se5V
power supply or the +5V low-cost adapter)
A-113
Subharmonic Generator
Freq.
In
Up
Mix
Out
Down
8.8.
Out 1
Level
1
Up
Down
8.8.
Level
2
Up
Down
8.8.
3
Foot
Ctr. 1
Foot
Ctr. 2
Preset
Up
Down
8.8.
Level
4
Out 4
Out 2
Store
Level
Out 3
