Lexicon MPX 1 - Manual (Page 103)

8-1
MPX 1 Internal Controllers
8
MPX 1 Internal
Controllers
This chapter describes all of the MPX 1 internal controllers. Examples of presets
which make use of a controller are noted to the side of each description. The
controls for making individual adjustments and assignments to the controllers
are available in the Edit menu and are described in Chapter 3: Editing.
The Knob controller allows you to define your own custom patch controller. Once
defined, you can place it in the Soft Row with its own label. You can even define
the upper and lower limits of the control. Use Knob when you want to manually
adjust the values of more than one parameter simultaneously, or when you want
to limit the range of control over a single parameter. Knob
Knob (Soft knob assignment for front panel parameter control)
Parameter Range Description
Value 0-127 initial setting
Low 0-127 Low point of range
High 0-127 High point of range
Name 9 characters Custom name
In general an LFO is a source whose output cycles constantly between 0, 127
and 0. Each LFO produces four simultaneous output waveforms: Sine, Cosine,
Triangle and Pulse. Rate controls how fast the output cycles — you can set the
rate as either a frequency (such as 3Hz) or as a rhythmic value (such as 2:3
cycles per beat). A Depth parameter scales the output range. Several additional
parameters make the MPX 1 LFOs very flexible. Mode, OnSrc and OnLvl allow
you to turn the LFOs on and off in different ways based on the output levels of
other MPX 1 controllers. PW allows you to dynamically modify the shape of LFO
waveforms. Phase lets you change the phase of the Cosine relative to the other
waveforms (Sine, Triangle, and Pulse).
NOTE: In all modes, the LFO completes its current cycle before stopping.
The first press of Tap resets the LFOs.
LFO1 and LFO2
LFO (1 or 2)
Parameter Range Description
Mode Off, On, Latch, Gate, Controls behavior of Source
Once, Reset, RTrig when OnLvl is reached
Rate 0-50.00/1:24-24:1 LFO speed
(Rate units) Option of Rate: Hz or Cycles per Beat
PW 0-100% Varies the pulse width of all shapes
Phase -120° to +120° Relative phase difference between Sine and
Cosine
Depth 0-100% Controls the amplitude of all shapes
OnLvl 0-127 Start/Stop level for Latch, Gate, Once, Reset
and RTrig modes
OnSrc Off, On, any internal Determines which control source is used to
or MIDI controller turn LFO on and off in Latch, Gate, Once,
Reset and RTrig modes.
AeroFreeze AB [n]Ekos:Beat
Filter Thing MPX Blue
LFO Modes
Off: LFO is disabled (OnSrc and
OnLvl are ignored)
On: LFO is always on (OnSrc
and OnLvl are ignored)
In the remaining modes, when the
value of OnSrc rises above or falls
below the value of OnLvl the LFO is
switched on and off as follows:
Latch: LFO toggles on and off
whenever OnSrc value rises
above OnLvl
Gate: LFO stays on while OnSrc
value is greater than OnLvl
Once: LFO sweeps through one
complete cycle when OnSrc
value rises above OnLvl.
(During the sweep, further
changes of OnSrc value are
ignored.)
Reset: LFO is always on, but its
phase resets to 0° whenever
OnSrc value rises above
OnLvl.
RTrig: LFO completes one cycle
when OnSrc value rises
above OnLvl. (The phase of
the LFO can be reset to 0° if
OnSrc value rises above
OnLvl during the sweep.)