Using The Amp Section - Korg KROSS Operation Manual

Playing and editing Programs

Using the Amp section

The Amp section includes controls for volume, pan, and the
driver circuit.
You can control the volume using the Amp EG, LFO 1/2,
Key Track, and velocity, along with other AMS sources.
Each Oscillator has its own Amp section: Amp1 for OSC1,
and Amp2 for OSC2.
Background - what does "Amp" mean?
Different sounds have characteristic shapes to their volume
levels.
For example, the volume of a piano note begins at a high
volume the instant you play the note, and then decreases
gradually.
The volume of an organ note, on the other hand, remains
constant as long as you continue pressing the key.
The volume of a note on a violin or wind instrument can be
varied during the note by the musician (i.e., by regulating the
amount of pressure on the bow or the force of the breath).
Volume Piano
Volume decays
gradually
Pan
Pan
The main Pan parameter controls the stereo position after
the signal has passed through the oscillator, filter, and amp.
Normally you'll set this to C064, so that the sound is
centered equally between the left and right speakers.
To create a stereo effect when OSC (Oscillator Mode) is set
to Double, set the OSC1 Pan to L001, and the OSC2 Pan
R127. This will make OSC1 go to the left speaker, and
OSC2 go to the right speaker.
With a setting of Random, the pan will change randomly
each time you play a note on KROSS, producing an
interesting effect.
Pan - DKIT-SET (Use DKit Setting)
Use DKit Setting applies when OSC (Oscillator Mode) is
set to Drums.
If this is checked, the Program can use a different pan
position for each drum sound, as specified by the Drum Kit.
If this is unchecked, all drum sounds will use the Program's
pan position.
The factory presets and GM drum kits use individual pan
positions for the different drums, so normally it's best to
leave this checked.
38
Volume Organ
Volume remains constant
until note is released
Time
Amp modulation
The basic volume level is set by the Amp Level parameter.
You can then alter this using the modulation sources below:
Amp Modulation
Velocity Intensity is used by most programs to decrease the
volume of softly played notes and increase the volume of
strongly played notes, and the Amp Modulation parameter
adjusts the depth of this control.
Normally you will set Amp Modulation to positive (+)
values. As this setting is increased, there will be greater
volume difference between softly played and strongly played
notes.
LFO1/2
Specifies how the LFO's will produce cyclic changes in
volume (tremolo effect).
The volume will be affected by the LFO(s) where you set an
LFO1 Int (Intensity), LFO2 Int (Intensity) value.
AMS Intensity adjusts the depth of how the tremolo effect
produced by the LFO will be affected when you assign an
Time
AMS (LFO1 AMS, LFO2 AMS).
For example if AMS (LFO1 or LFO2) is set to
M.Wheel:#01, a tremolo effect will be produced when the
modulation wheel is moved away from yourself or when
CC#1 is received.
Keyboard Track
This lets you vary the volume relative to the note that you
play.
For details, please see "Keyboard Track" on page 37.
Amp EG
The Amp EG lets you control how the volume changes over
the course of the duration of a note.
Every instrument has its own characteristic volume
envelope. This is part of what gives each instrument its
identifiable character.
Conversely, by changing the volume contour–for instance,
applying a string-like Amp EG curve to an organ
multisample– you can produce interesting and unusual
sounds.