Slap Echo; Early Reflections; Doubling, Tripling - Lexicon Prime Time 93 Owner's Manual

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see section 2.7.) Bring up the MASTER control so that "lOdB" of the HEAD-
ROOM INDICATOR 1 i ghts on peaks but so that "OdB" does not 1 i ght at a 11. If
the level is still not high enough, increase the INPUT GAIN to 20dB and reset
the MASTER control for the correct HEADROOM indication.
Now bring the IN control of the OUTPUT MIX (the source) up to the third
division. Bring up the OUTPUT MIX MASTER control until a comfortable vol-
ume is reached. Set DELAY SELECT A for 128 msec and bring up the OUTPUT_MIX
A control until the echo can be heard distinctly. Be sure not to light the
OVERLOAD light with too much level from the OUTPUT MIX sources (the OUTPUT
MIX MASTER control does not effect OVERLOAD).
SLAP ECHO
M.93 is now simulating a 128 msec single echo ("slap echo••) which can be
thought of as a very short mountain-like echo or as the first reflection
from a distant wall of a cathedral. The closer the volume of the delayed
sound to the original, the harder seems the imaginary surface from which
it
was "reflected
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If the delayed sound is as loud or louder, however,then
the situation seems unnatural.
EARLY REFLECTIONS
Keeping the delayed level lower than the original, reduce the delay time to
make the simulated space become smaller. Below 30 - 50 msec the delayed
sound is no longer discernable as separate from the original. It is per-
ceived as crude ambiance: crude because only one reflection is represented.
Another "reflection
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can be derived from M.93 by setting Delay B to, say,
about twice the time of delay A and bringing up the OUTPUT MIX B control to
an amplitude somewhat smaller than that of A. That is, the longer the delay,
the smaller the amplitude. The second delay tap can also enhance the echoes
which are perceived at longer delay times.
DOUBLING, TRIPLING
So-called "doubling .. can be achieved by setting one delay to about 40 msec
or less and to about the same volume as the source (OUTPUT MIX IN). Since
the sounds merge at such short delay times, the effect of doubling is to
thicken and intensify the source. When using voice as a source, this is
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