side down. See pages 6-7 for examples of combined
inversion of several bits. Even more radical deforma-
tions of the signal are achieved by cross-patching in-
dividual ADC outputs and DAC inputs. Many interest-
ing, complex waveforms can be obtained when using
control voltages from LFOs, envelope generators,
and sequencers.
• Bit reduction: a lower-resolution staircase wave-
form can be created by leaving only higher signifi-
cant bits (5, 6, 7).
• Bit crushing: this effect can be produced by lower-
ing the input signal level and boosting the output sig-
nal level. Bit crushing can be combined with sample
rate reduction when using an external clock.
• Generating trigger patterns: feeding an LFO or a se-
quencer into the ADC provides trigger patterns useful
for drum sequencing. The changes on individual out-
puts can be synchronized by using a higher frequency
pulse wave as the ADC clock. This is particularly use-
ful for avoiding the erratic changes that result from
the presence of noise in the input signal.
• Frequency multiplier: when a continuous wave-
form is fed into the ADC, individual binary outputs
deliver pulse waveforms that flip between 0V and 5V
many times per input period, depending on the level
of details they represent. The average frequency of
each input is twice as high as the frequency of the in-
put above it, resulting in extremely fast waveforms at
the least significant bit (0).
note:
only input signals
with linear slopes (like a sawtooth or triangle) yield
uniform rectangular signals at the binary outputs.
• Interesting waveshapes can be created at the DAC
output by feeding the binary DAC inputs with various
combinations of gate signals (e.g. taken from binary
counters, frequency dividers, or free-running oscil-
lators). The dac clock input may be employed for
freezing the state of the converter at any time, using
a single trigger impulse, or a sequence of triggers.
• Drezno (with or without Lipsk connected) can be
used in combination with other logic modules (like
AND, OR, XOR, etc.), operating on individual bits
or entire 8-bit strings. In general, all types of 8-bit
mathematical operations may be performed on sig-
nals and control voltages in this way. Even more ad-
vanced manipulation of signals is possible with two
Drezno modules. Combining binary representations
of two sources opens a whole universe of transfor-
mations that would never be possible with analog
signal processing. •
5
usage
suggestions
MADE IN THE EU
XAOCDEVICES.COM
–
12 VOLTS
RED STRIPE HERE
POWER
CONNECTOR
CHAIN A SET OF EXPANDERS
FOR THE LEIBNIZ SUBSYSTEM
REV
. 03.20
17
DREZNO
1989 BINARY CONVERSION KOMPUTOR
fig. 3
16
15
lipsk
drezno
Observe the cable orientation. Do
not mistake expander headers with
power cord headers, this would
void the module warranty!
