Stereo And Quad - Lexicon Prime Time 93 Owner's Manual

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For example, a delay of 33.3 msec can be used (which eliminates 30Hz and all
of its harmonics) instead of 16.7 msec. These delay times can be approximat-
ed with DELAY SELECT and fine tuned, listening for a null, with DELAY ADJUST.
3.5 STEREO AND QUAD
Using the INPUT MIXER for the left channel and the MASTER OUTPUT for the
right channel, M.93 can synthesize stereo effects from a mono source. Make
an echo bounce back and forth between left and right by bringing up a 128-
msec delay in the OUTPUT MIX and by recirculating a 256 msec delay in the
INPUT MIX. A more realistic mountain-like echo can be simulated by recirc-
ulating both delays and by using 97 instead of 128 msec. This scheme makes
for spacious reverberation at delay times too short for echoing. Set up
other stereo reverberation and recirculating mixes by using various combi-
nations of IN, A, and B functions in each mixer and by varying the PHASE
INVERT functions. For stereo mixes of reverberance alone, without direct
signal, use the DELAY A and DELAY
B
outputs for left and right (perhaps
rear) channels respectively. See FIG. 3.10.
IN
INPUT MIXER
OUT: LEFT
MASTER OUTPUT:
RIGHT
FIG. 3.10 SCHEMATIC REPRESENTATION OF STEREO SYNTHESIS
Doubling and tripling effects can be made in stereo by sending the source to
the left channel from the INPUT MIXER OUT and the delayed signals to the right
channel from the MASTER OUTPUT. Make flanging in stereo by mixing equal