Lexicon LXP-15-II Owner's Manual page 32

LXP-15 II Owner's Manual
Lexicon
Pitch On/Off: Enables the pitch shifter. Selecting "Off" bypasses the pitch shifter
and the small delay associated with it.
Interval: Adjusts the pitch shift in semitone increments from two octaves below
to one octave above the original pitch. Control this parameter with Last Note,
High Note or Low Note for MIDI harmonizer or loop sampler effects.
Pitch Fine: Provides a fine adjustment of pitch for detuning effects. The MIDI
source range of 0-127 is interpreted as being centered on 64. Control this
parameter with such sources as the LFO and input envelope follower to produce
vibrato, doubling and detune effects.
HiCut and LoCut: Adjusts high-frequency and low-frequency roll-off. Setting
both HiCut and LoCut to "Full" gives a flat response through the EQ block. The
EQ block of this algorithm is within a feedback loop. When roll-off (either HiCut
or LoCut) is used with feedback, the amount of roll-off will increase as the
recirculation is increased. Also, if the predelay loop is used for loop sample
effects, the EQ section can dynamically alter the tone of the loop.
Decay: Adjusts the reverb time for mid-frequency signals. Becase low fre-
quency reverb time (Bass Multipy) is a multplier of decay time, this parameter
acts as a master control for reverb time.
Treble : Sets the frequency above which sounds decay at a progressively faster
rate. When set relatively low, it gives a darker tone to the reverberation,
simulating the effect of air absorption in a real hall. Maximum setting gives a flat
response through the filter section.
Bass Multiply: Sets the reverb time for low-frequency signals, as a multiplier of
the Decay parameter. For example, if Bass Multiply is set to 2X and Decay is set
for 2 seconds, the low-frequency reverb time will be 4 seconds. For a natural-
sounding hall ambience, values of 1.5X or less are recommended.
Size: Sets the rate of buildup of diffusion after the initial period (which is set by
Diffusion). It also acts as a master control for Decay. Because of this link, Size
changes a reverb sound from very large to very small. Generally, you should set
Size before adjusting anything else. The size in meters is roughly equivalent to
the longest dimension of the space you are trying to create. Note that changing
Size temporarily mutes the outputs.
Diffusion: Controls the degree to which initial echo density increases over time.
High settings of Diffusion result in high initial buildup of echo density; low settings
cause low initial buildup. Echo density is affected by Size — smaller spaces will
sound denser. To enhance percussion, use high settings of Diffusion. For
clearer and more natural vocals, mixes and piano music, use low or moderate
Diffusion settings.
LFO Rate: Adjusts the rate of the internal LFO. Note that in order to hear the
effect of changing the LFO Rate, the LFO must first be patched to control some
parameter in the algorithm.
Reverb Mix: Adjusts the mix of reverb with pitch shift/EQ/stereo delay effects.
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