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doepfer
VC Frequ. Shifter
Audio
In
Audio
Out
CV
Up
Mix
Down
System A - 100
A-126
Level
Over-
Shift
load
CV
Mix
VC Frequency Shifter
1. Introduction
Module A-126 (VCFS) is a voltage-controlled fre-
quency shifter.
The amount of frequency shift can be varied from
about 50 Hz up to 4 kHz, either manually, or by voltage
control (via an attenuator).
The amount of input signal gain can be controlled
with the Level knob.
The upward- (Up) and downward- (Down) shifted
signals are available at separate outputs, and also at
the Mix output, where a mix of the two frequency-
shifted signals is available, with the balance controlled
by a Mix knob.
The Audio Out socket provides an amplified but not
frequency-shifted version of the original input signal.
A-126
1
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Summary of Contents for DOEPFER A-126
- Page 1 System A - 100 A-126 doepfer VC Frequency Shifter 1. Introduction Module A-126 (VCFS) is a voltage-controlled fre- quency shifter. A-126 The amount of frequency shift can be varied from about 50 Hz up to 4 kHz, either manually, or by voltage VC Frequ.
- Page 2 A-126 System A - 100 doepfer VC Frequency Shifter 2. VCFS - Overview Controls: 1 Level : gain control for the signal connected A-126 to input ! VCFS 2 Overload : LED overload warning light for the VC Frequency Shifter...
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Page 3: Basic Principles
System A - 100 A-126 doepfer VC Frequency Shifter 3. Basic principles 4. Controls Frequency shifting can slide an audio signal upwards 1 Level ("UP Shift") or downwards ("DOWN Shift"). Control 1 is used to set the amount of amplification of the input signal at socket !. -
Page 4: Mix Output
A-126 System A - 100 doepfer VC Frequency Shifter 5 Mix § CV 1 Use control 5 to set the relative amounts of upward- Patch a control voltage for modulating the amount and downward- shifted signals present at the mix of frequency-shift into socket §. - Page 5 System A - 100 A-126 doepfer VC Frequency Shifter 6. User examples Audio- VCFS A-138 A typical use for a frequency shifter is to transform the Signal human voice - for instance, in a simple example, to CV In produce ‘robot voices’.
- Page 6 VCFS A-118 VCFS CV In Drum- A-119 ADSR Signal Gate Audio fig. 4: using the A-126 for new percussion sounds fig. 3: frequency-shifting an octave band...
- Page 7 System A - 100 A-126 doepfer VC Frequency Shifter Very interesting sound textures can result from a By using a mixer module A-138b, and altering the relative levels of the Up, Down and original signals, the combination of frequency shifting and frequency tonal possibilities of the frequency shifter can be ex- modulation (see.
- Page 8 A-126 System A - 100 doepfer VC Frequency Shifter 7. Patch-Sheet The following diagrams of the module can help A-126 A-126 VCFS VCFS A-126 VCFS you recall your own Patches. They’re designed so VC Frequency Shifter VC Frequency Shifter that a complete 19” rack of modules will fit onto an VC Frequency Shifter A4 sheet of paper.
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