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Chapter 22 ES2 265
This facility is especially helpful if you’ve always wanted to use Controller #4 (foot
pedal), for example, as a modulation source. This feature allows you to assign your
favorite MIDI real-time controllers as Ctrl A, Ctrl B, and so on.
All parameters that allow you to select a MIDI controller feature a Learn option. If this is
selected, the parameter will automatically be assigned by the first appropriate
incoming MIDI data message.
Note: As the new entry is added to the top of the list, existing automation data is
increased by one. Should further assignments be made, this will increment by one for
each entry.
Note: If none of the controller assignments (Ctrl A–F) is assigned to “Expression”, the
Expression CC message (Ctrl #11) controls the output volume.
Note: The “Vector Stick” (Joystick) of the Korg Wavestation synthesizer generates
Controllers 16 and 17, for example. If you use this instrument as your master keyboard,
you can control modulation intensities directly with its Joystick.
Note: In the MIDI specification, for all controllers from 0 to 31, there also is a LSB-
Controller defined (32 to 63). This “Least Significant Bit”-controller allows for a
resolution of 14 bit instead of 7 bit. The ES2 recognizes these control change messages
correctly, for instance the controllers for breath or expression.
RndN01
RndN01 (NoteOnRandom1) controls the modulation intensity (See RndNO1 on page
263).
RndN02
RndNO2 (NoteOnRandom2) controls the modulation intensity (See RndNO2 on page
263).
SideCh
A Side Chain source (tracks, inputs, busses) is used to create the modulation signal.
The LFO’s
LFO is the abbreviated form of Low Frequency Oscillator. In an analog synthesizer, LFO’s
deliver modulation signals below the audio frequency range—in the bandwidth that
falls between 0.1 and 20 Hz, and sometimes as high as 50 Hz. LFO’s serve as modulation
sources for periodic, cyclic modulation effects. If you slightly modulate the pitch of an
audio oscillator at a rate (speed, LFO frequency) of, say, 3–8 Hz, you’ll hear a vibrato. If
you modulate the cutoff frequency of a lowpass filter, you’ll hear a wah wah effect, and
modulating the dynamic stage results in a tremolo.
The ES2 features two LFO’s, the outputs of which are available as sources in the Router.