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doepfer

System  A - 100

VCLFO

  

A-147

1

1.  Introduction

Module 

A-147 (VCLFO)

 is a 

voltage controlled low

frequency oscillator, 

which can produce cyclical con-

trol voltages over a  0.01Hz to 50Hz frequency range.

The VCLFO can be patched as a 

modulation source

for a wide range of modules  (for instance, modulation
of VCO pulse-width or frequency, VCF cut-off fre-
quency, VCA amplitude modulation) and as a provider
of repetitive or clock voltages (for instance to drive the
A-161 clock sequencer).

Four waveforms are available: 

triangle, sine, square,

and

 falling sawtooth waves

.

The VCLFO's frequency can be controlled by hand,
but also by voltage control.

You can sync the VCLFO to another waveform by
connecting the other waveform (eg another LFO) to
the VCLFO’s reset input.

Frequ.

A-147

VCLFO

Reset

CV

CV

Содержание A-147

Страница 1: ...modulation of VCO pulse width or frequency VCF cut off fre quency VCA amplitude modulation and as a provider of repetitive or clock voltages for instance to drive the A 161 clock sequencer Four wavefo...

Страница 2: ...d sine waves at outputs and or 4 LED Frequency indicator for the square wave at output 5 LED Frequency indicator for the sawtooth wave at output In Outputs Reset Reset input for syncing the VCLFO CV C...

Страница 3: ...han about 15 to 20 Hz our persistence of vision means that the LEDs look permanently on 4 In Outputs Reset A gate pulse entering the reset input socket enab les the VCLFO to be synchronised with anoth...

Страница 4: ...are wave amplitude roughly 5 V whose frequency voltage state is indicated by LED 4 This socket outputs a falling sawtooth wave amplitude roughly 7 V whose frequency voltage state is indicated by LED 5...

Страница 5: ...ing string vibrato The patch in Fig 2 shows a string vibrato simula tion copying the common guitar or violin playing technique in which the finger applying the vibrato moves parallel to the fingerboar...

Страница 6: ...y can be voltage controlled This above all gives you the chance to use a MIDI CV interface such as the A 190 or A 191 and use your chosen controller to adjust the VCLFO frequency via MIDI That makes t...

Страница 7: ...ules You can then stick them onto another piece of paper and create a diagram of your own system Make multiple copies of your composite diagram and use them for remembering good patches and set ups P...

Страница 8: ...A 147 VCLFO System A 100 doepfer 8...

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