beautypg.com

System a - 100, A-117, Controls – Doepfer A-100(~ 40 MB) User Manual

Page 245: Doepfer

background image

doepfer

System A - 100

Digital Noise Generator

A-117

3

3. Controls

1

Rate

This is used to adjust the pulse rate of the random
clocks generated. At low pulse rates, individual pulses
can be heard (see Fig.1, top), but with higher pulse
rates (see Fig.1, bottom) the sound merges into noise.

Fig. 1:

A-117 output signals at different pulse rates

4. In / Outputs

!

DNG / RND CLK

Output !

!

!

!

produces random clock pulses or digital

noise, depending on the pulse rate set.

"

EXT. CLK

Input " is a normalled socket, so that the rate knob
controls pulse rate, unless a signal is patched into this
socket.

This external clock can be provided eg., by a square
wave from a VCO or LFO, or from a MIDI clock, etc.. In
this case, control 1 has no effect. Pulse rate is then
simply decided by the frequency of the external clock.

§

6 Oscillators

Output § delivers a six-oscillator mix, like the raw
material of the TR-808’s cymbal sound.

$

2 Oscillators

Output $ delivers a two-oscillator mix, like the raw
material of the cowbell sound on the Roland TR-808.

DNG/

Clock

Out

DNG/

Clock

Out