Lexicon pcm 42 Owner's Manual page 20

bee ONLY by the setting of the VCO-SWEEP controls
d the DLY X? pushbutton.
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in Ths section.
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working with long loops, the delay ta
synchronized to the period of the infinite re
2 . 10 ene total length of the availabie memory.
ng procedure will achieve this:
DELAY TO THE MAXIMU!
Press the UP pushbu
) while ae ing DOWN _In about 5s
lay will "top out" at the m maximum delay Hime for
the present amare rate. Now release the two bu
(DOWN first, then UP; otherwise the setting will back
up one or two steps from maximum). The segment
length is now exactly equal to the delay time as
displayed on the front panel.
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ae
in
gown
+h 4 ~
the disp
2.) ADJUST THE MANUAL VCO-SWEEP CONTROL
TO AN EVEN VALUE OF DELAY. If your PCM 42 has
no memory option, a value of 800 will occur near the
center of the control's travel: with the memory option,
the value will be 1600.
4.2.2 Looping Techniques for Live Performance
CHELAY X2 LEVEL FEEDGACK PUTER
60 BE
SEE MODE
wi th
os
On.
4.) ADJUST THE MANUAL V
POR THE DESIRED avis
and the length of the
chronized, you may ¢
the MANUAL
echoes will
rate is
CO-SWEEP CONTROL
Now that the delay time
NITE REPEAT loop are syn-
ae both together by adjusting
VCO-SWEEP control. The decaying
remain in synchronization as the sampling
varied.
A very useful technique with the infinite repeat is to
get a basic line or part trapped into the memory, then
turn feedback up full clockwise. When the infinite
repeat is released, the looped segment does not die
away immediately, but continues to repeat Gue to the
high degree of regeneration used. (Be sure you have set
the segment length as described above.) While in this
state, new notes, rhythms, or lines may be added over
the old. Then if the unit is placed once more into repeat
mode, both the old and new parts will be heard. This
technique would not be feasible except for the superior
qualities of Lexicon's special encoding circuitry, which
contribute very little audio degradation to a recirculated
signal.
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Figure 4.5-m — LONG DELAY LOOP
This is a more extended form of the setup in Fig. 4.5-1, with many layers. Sound can be captured in INFINITE REPEAT
mode; when this mode is turned off, new layers can be added to the sound and the composite put back in INFINITE
REPEAT. For instructions on how to synchronize the beginning of the measure to the beginning of the repeat cycle,
see below.
Once the procedure described in Section 4.2.1 has
been carried out, the delay times will be synchronized
with the length of the INFINITE REPEAT loop. There re-
main two potential barriers to the maximally effective
20
use of this facility: how to synchronize the beginning of
a measure with the start time of the loop, and how to
establish tempo within a repeated loop that is too long
to count reliably