Modulation - Lexicon PCM 90 - REV 1 User Manual

The Modulation row, which is the same for every algorithm, contains the
parameters for the PCM 90's internal modulation sources. Use the Patch row to
assign these modulators to any PCM 90 effect parameter.
Mod: LFO1 and Mod:LFO2
Four parameters are available: Shape, P Width, Depth, and Rate.
Shape allows you to select the wave shape which will be used when "LFO" is
selected as a patch Source. The choices are:
Sine
Cosine
Square
Sawtooth
Pulse
Triangle
Random (outputs a new value on each cycle of the LFO)
P Width determines the proportion of each pulse wave cycle for which the LFO
is on (1-99%). For example, setting P Width to 50% means that the LFO is on
for half of its cycle. The effect of this control will only be heard if you are using
the Pulse shape.
Depth scales the output of the LFO from 0 to 100%. This control affects the
output of the LFO only. It has no effect on the outputs of the individual
waveforms.
Rate sets the speed (0-10Hz) at which the LFO cycles. It can be set in time
values (such as 1.5Hz) or in tempo values (such as 3:2 cycles per beat).
Simultaneously pressing Up and Tempo will toggle these two display options.
Note: The PCM 90 allows six LFO shapes (sine, cosine, sawtooth, triangle,
square and pulse) or a random shape to be selected as patch sources, as well
as the LFO itself. All of these are generated by a single LFO, and are controlled
by the single Rate control. When "LFO1" is selected, for example, as a patch
source, the output will be the Shape selected here. The amplitude of the LFO
output is controlled by Depth. Both Shape and Depth are available as patch
destinations and can be controlled externally. Shape, Pulse Width, Depth, and
Rate are all available as patch destination parameters, and can be controlled
externally. See Patching in Chapter 2.
Shape, Rate and Depth can be controlled by a patch.
The Algorithms and Their Parameters

Modulation

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