Doepfer A-104 Handleiding

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doepfer System A - 100Trautonium Formant Filter A-104

1

1. Introduction

Module A-104 is a replica of the Formant Filterof the

“Mixtur Trautonium”by Oskar Sala. It is made of

four parallel resonance filterswith common input

and output (see fig. 1 on page 3). Each filter can be

switched to low pass or band passor off. Frequency,

resonance, mode(band/low/off) and levelare con-

trolled for each filter separately by hand (no voltage

control !). The frequency range for each filter is about

50Hz...5kHz.

The input levelfor all filters is controlled by an at-

tenuator. The filter audio inputs are very sensitive so

that distortion may intentionally be used to create new

sounds - if desired.

The A-104 is a versatile module for sound modifica-

tion. In the first place it is used for reproduction of

resonances(e.g. the vocal-like effectsknown from

the Trautonium). In combination with the subharmo-

nic generator A-113 one obtains the complete replica

of the Trautonium sound generation.

More detailed information about the Trautonium can

be found on our internet site www.doepfer.com .

A-104

Audio

In

Resonance

Frequency

Level

VCF 1

Audio

Out

Input

Level

VCF 2VCF 4

Mode

Product specificaties