Input Signal - Xaoc Devices SARAJEWO Operator's Manual

delayed signal is available after each chip. A
high signal–to–noise ratio is achieved thanks
to signal companding (dynamic compression
at the input matched with dynamic expansion
on each of the outputs). An anti-aliasing filter
at the input and anti-imaging filters on each of
the outputs ensure optimal conditions for the
BBD chips to process the signal.
In general, the incoming signal must be band–
limited in order to prevent high frequency com-
ponents from interfering with the clock. Simi-
larly, lowpass filtering applied after the signal
is processed helps to eliminate high frequency
artifacts introduced by the BBD chips. In Sara-
jewo, all of these filters are tunable and follow
the current clock frequency, thus offering maxi-
mum bandwidth with minimal artifacts.
An internal feedback loop taken from the last
tap allows for the classic echo effect with ad-
ditional coloration offered by an adjustable tilt
filter. The feedback loop can also be processed
externally while a crossfading circuit offers a
continuous mix of the input and the signal from
the last tap.
The front panel of Sarajewo is shown in fig.
2. The signal you wish to process should be
patched to the input jack
2
above controls the amplitude with the in-
put indication multicolor LED
visual feedback. The outputs from individual
taps are labeled t
1
4 5 6
, , . The central large t
allows for precise setting of the overall delay
time of the three stages, from about 20ms to
over 1.5s. The delay time can be modulated
1 . The level knob
3
providing
, t , and t , respectively:
2 3
time dial
3
via CV patched into the corresponding jack
8
below
source via the sync input
BBD chips share a common clock, using the t
and t outputs will provide signals delayed by
2
1/3 and 2/3 of the t
mixed output
your input signal and the t
controlled both by the effect knob
CV patched into the mix cv jack
nal from the ext feedback loop input
mixed with the input of the delay line. This jack
is normalized to the t
connection can be broken by sending one of the
tap outputs to an external processor (such as
the Xaoc Belgrad filter), and back to Sarajewo
via the ext feedback loop input. Regardless
of the actual feedback signal path (internal or
external), the signal always passes through
an internal tilt-type filter, adjustable with the
tone slider
controlled by the fbck slider
range led
by the combination of the t
incoming CV signal exceeds the time range of
the module. When the CV inputs are in use, the
corresponding knobs act as offsets.

inPut SiGnAl

Sarajewo is AC coupled and accepts modular
level audio signals (10Vpp and higher). The
level knob attenuates the input to prevent
distortion (indicated by the color of the input
7 indication LED). When it turns from green
to yellow and then to red, it means the signal
is too hot and the BBD chips may introduce
audible distortion.
3
or synchronized to an external clock
9
time, respectively. The
3
10
delivers a continuous mix of
tap. The balance is
3
output, however, the
3
14
. The amount of feedback is
15
16
indicates that the delay time set
time dial and the
3
. Since all three
1
11 and the
12 . The sig-
13 is
. The bbd off-