DOEPFER A-178 Handbuch - Seite 5

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6. User examples

Theremin module A-178 provides a further source of

control for real-time sound manipulation and creation

(so see also the suggestions in the manual for the

Foot Controller, module A-177).

The change in voltage produced by your hand getting

closer to the antenna can be used for all sorts of

control or modulation:

• VCO pitch control

• VCA gain

• VCF cut-off frequency

• VCF resonance (with the A-121, 122 or 123)

• VC-LFO frequency

• LFO modulation depth

Standard Theremin

Fig. 1 shows how to use two A-178 modules to create

a standard theremin. One hand controls the pitch of

the VCO, and one controls the gain of the VCA.

System A - 100

fig. 1: A standard theremin, using two A-178 modules

If you want to use two or more theremin modules, you

need to think carefully about the best positioning for

them in the rack relative to each other, so that each

can be controlled by hand movements without affec-

ting the other/s.

It's useful, with one or more theremin module, to place

them high in your rack, so that there's less chance of

patch cables hanging down and affecting performance

(see fig. 2).

Theremin

A-178

VCO

VCA

A-178