Doepfer A-149-1 Quantized/Stored Random Voltages - Manual

doepfer System A - 100 RCV A-149 /1
1
1. Introduction
Module A-149-1 is a Random Control Voltage
Source based on the idea of Don Buchla's "Source of
Uncertainty 265/266" modules. It has available 4 ana-
log random voltages, that are generated in different
ways.
The Quantized Random Voltages section has avai-
lable the outputs N+1 and 2
N States. N is an integer
number in the range 1...6 that can be adjusted manu-
ally (Man N) and by an external control voltage CVN.
The voltage steps are 1/12 V for the 2
N output (i.e.
semitone intervals) and 1.0 V for the N+1 output (i.e.
octave intervals).
The Stored Random Voltages section has available
an output with even voltage distribution with 256
possible output states and another output with ad-
justable voltage distribution probability. The distri-
bution of this output can be adjusted manually (Man D)
and by an external control voltage CVD. The voltage
range is 0...+5 V for both stored random outputs.
The rising edge of the corresponding Clock input
signal triggers a new random voltage value at the
outputs.
Each output is equipped with a LED that displays the
current output voltage.
CV N In Man N
A-149
Clk In
RCV
n+1
CV N
Quantized RV
CV D In Man D
Clk In
CV D
Stored RV
2n
Remark: The A-149-1 can be expanded by the A-149-2
module (8 digital random outputs with LED displays)