KORG OASYS musical instruments - Manual (Page 22)

Introduction to OASYS
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result will be a melodic phrase. If assigned to the filter,
the filter will produce modulation in synchronization
with the tempo.
The step sequencer also provides a “Smoothing”
parameter that interpolates between the values of each
step, letting you create not just step-wise modulation
but also smooth change that can function as an LFO
with freely-specified waveform. Since you can specify
the duration of each step individually, this can be used
to create not just simple beats but also complex
rhythms, producing a mind-boggling universe of
phrases, rhythms, and modulation.
AMS – a powerful modulation system with AMS
Mixers and Keyboard Tracking Generators
The AL-1 gives you a modulation system that is far
more powerful than any other, with AMS (Alternate
Modulation Source) at its core. You can choose from an
amazing 52 different modulation sources, including
the output of the step sequencer, EGs, and LFOs, as
well as controllers such as the joystick, knobs, pedals,
and switches. These sources can be assigned to
modulation destinations such as sound parameters like
pitch or cutoff, and can also be used to modulate the
EG attack time or sustain level. You can even create a
highly complex modulation source by using one
modulation source to modulate another modulation
source; for example, using an EG to modulate the
waveform of an LFO.
There are also two Key Tracking generators that let you
create natural changes – or dramatic transformations –
in parameter values as you play different ranges of the
keyboard.
In addition, the newly developed AMS Mixers not only
lets you mix multiple modulation sources and assign
them to a single modulation destination, but also let
you modify the source itself so that a single
modulation source can be adapted to multiple uses.
Detailed Specifications
• Oscillators: OSC1, OSC2, Sub OSC, noise generator,
ring modulator, FM
• Audio input: External audio sources can be
processed by ring modulation, filtering, driver,
amp, or EQ
• Filter: Two multi-mode filters per voice (low-pass,
high-pass, band-pass, band reject), four filter
routings (single, serial, parallel, 24 dB)
• Multi-filter (filter A only: low-pass, high-pass,
band-pass, and direct input can be mixed freely)
• Driver: Per-voice non-linear driver/low-boost
• Modulation: Five envelope generators, four LFOs,
two key tracking generators, two AMS mixers, one
step sequencer– in addition to the Common LFO,
Common Step Sequencer, Common Key Tracking
generators, and Vector EG of the EXi Program
CX-3 Tonewheel Organ
A perfect simulation of a tonewheel organ system
Tonewheel organs generate sound by rotating toothed
metal disks (the tonewheels) past a pickup to generate
sine waves. Korg’s CX-3 uses cutting-edge modeling
technology to precisely replicate the distinctive
modulation and noise components of sounds
produced in this way, and this technology has been
further refined and included in the OASYS as the CX-3.
Two tonewheel types are provided; “Vintage” which
models even the leakage noise from the tonewheels,
and “Clean” which faithfully reproduces the warm
tonewheel organ sound. In addition, the noises
produced by the tonewheel and the vacuum tube amp,
and even the operation of the wheel brake, have all
been simulated to an obsessive degree of perfection.
Just like real tonewheel organs, the CX-3 delivers full-
key polyphony*, letting you enjoy the same playing
feel as on a vintage organ.
* The maximum polyphony will vary depending on
how the insert effects are being used. (The
polyphony is 172 voices if no insert effects are used.)
Drawbars – the heart of a tonewheel organ
A drawbar organ allows the player to create the
desired sound by pulling out drawbars that are
assigned to various pitches relative to the
fundamental, and this capability is provided on the
CX-3 Tonewheel Organ by the Tone Adjust function
which you can control using the nine sliders on the
front panel. You can also use the Tone Adjust function
to switch the rotary speaker between slow/fast and
control the percussion and wheel brake from front
panel knobs and switches that you’ve assigned to these
functions, enjoying the immediacy of dynamic control
that’s so important for an organ performance.
EX mode for new sound-creating potential
In addition to modeling a standard tone-wheel organ
with 9 drawbars and single-pitch percussion, the CX-3
adds Korg’s exclusive EX mode. This adds four
additional drawbars, with pitches adjustable in half-
step increments between 16’ and two octaves above 1’.
EX mode also allows you to create custom percussion
using up to five different pitches, each with adjustable
volume levels. Together, the additional drawbars and
custom percussion open up even deeper possibilities
for creating new sounds.
Realistic simulation of rotary speaker effects
The CX-3 not only provides an impeccable tonewheel
simulation, but also gives you everything you need to
complete the sonic experience, with effects such as
amp modeling, vibrato/chorus, and rotary speaker.
You can choose from three different characters of amp
modeling, and a vibrato/chorus effect that provides
presets as well as being customizable. For the rotary
speaker that is so indispensable to organ sounds, you
can separately specify the rotational speed of the horn
and rotor, and even make detailed adjustments to
parameters such as the rate at which the rotation
changes from slow to fast. In addition, the rotary
speaker includes two stereo mic simulators that let you
specify the distance from the speaker to the mic and