AI SYNTHESIS MODULE
AI Synthesis System
Features of the X5DR
Superior Sound with Korg's AI2 Synthesis System
The Korg X5DR employs Korg's AI2 Synthesis System for all digital processing. From the tone
generator—with its 8MB capacity—to the filters, amplifier, and effect units, all audio is handled
in the digital domain, which ensures the highest quality sound with absolutely no signal loss or
deterioration in audio quality.
Based on state-of-the-art PCM technology, the AI2 Synthesis System is technology developed by
Korg to capture the true essence of acoustic sound for use in a tone generator. Since its
introduction in Korg's 01/W series, X2/X3/X5, and i2/i3 synthesizers, the AI2 Synthesis System
has received unqualified praise from musicians and artists throughout the world. With the X5DR,
you will enjoy a richness and variety of sound at a level of excellence that meets or exceeds the
quality of audio CDs.
Multisounds Let You Create an Endless Variety of Sounds
The X5DR contains 430 built-in Multisounds, which are multi-sampled PCM waveforms. These
Multisounds allow you to simulate a range of acoustic sounds, from drums and percussion to
piano, guitar, and trumpet. The X5DR also features unique Multisounds—such as Synth and
Special Effects—which provide a wide variety of flexible tools for sound creation. In fact, the
X5DR can generate a virtually endless variety of sounds.
These built-in Multisounds can be played in their unmodified form. They can also be modified to
create the sound of various musical instruments once they pass through a powerful VDF (filter)
and VDA (amplifier). You can also add a rich expressiveness to a performance by altering the
sound using the key touch velocity, or by adjusting the brightness of the sound or the depth of the
vibrato using MIDI modulation messages.
Rich, large-scale ensembles with 64-voice polyphony
The X5DR's 64-voice polyphonic capability allows you to create complex ensemble and
large-scale orchestral sounds. Combinations of multiple Programs and features in Multi mode will
help you achieve such effects. The X5DR can simulate a magnificent piano sound, replete with a
damper pedal, and ensembles of various instrumental parts without any notes cutting off.
236 Programs in Banks A and G
Bank A contains 100 Programs and Bank G contains 136 General MIDI (GM) compatible
Programs. You can store your own Programs in Bank A.
Programs comprise the basic sounds of the X5DR. You can play different Programs in a song; you
can even layer them in Combinations.
One Hundred Combination Slots Allow for an Endless Variety of Programs
Up to 100 Combinations can be stored in the X5DR. Up to eight Programs can be assigned to each
Combination. In Combinations, you can layer or split multiple Programs by setting the Key
Window or Velocity Window parameters.
Combinations are powerful sound tools, especially for live performance. The Combination types
layer, split, and velocity switch provide various sound structures.
Drum Kits Support a Variety of Rhythms
The X5DR provides 215 types of popular drum sounds, including both standard drum and
percussion sounds. You can create two Drum Kits by assigning different drum sounds to each key
on the keyboard. There are also eight ROM Drum Kits available.
A Drum Kit supports the rhythm of a song. Assigning a different drum sound to each key allows
you to create a wide variety of rhythm parts. You can also edit the drum sounds using VDF, VDA,
and effect units.
Extensive Presets Produce a Wide Range of Truly Practical Sounds
The X5DR utilizes various Programs, Combinations, and Drum Kits as Preset data. You can load
the sounds stored in Presets a and b into the Program or Combination memory for immediate use.
The Preset Load operation loads data from all preset sounds to one particular sound slot.
The versatile editing functions of the X5DR let you create original sounds very easily. On the other
hand, it is quite a bit of work to create a good sound from scratch. Given such circumstances,
Preset data can be very handy. You can use the data immediately after you load a sound, choosing
from a broad selection. You can use Preset data just as it is, without modification. You can also use
Preset data as the raw material for sound editing. You may be able to glean a few ideas for
sound-making from the Preset sounds.
Digital Multi-Effects Processors: To Create and Add Dimension to Sounds
The X5DR contains two independent digital multi-effects processors that can produce various
effects such as reverb, delay, EQ, distortion rotary speaker, etc. These effects are very useful when
you want to create a new sound or add dimension to a sound. Some effects are actually a
combination of two effects. Using the X5DR's two independent digital multi-effects processors,
you can use up to four independent effects simultaneously.
The effects processors allow you to apply effects and edit the sounds directly on the X5DR,
instead of connecting external effect units. Placement settings are useful for processing the sound
and adding width or depth to the sound. Each Program and Combination can have its own effect
A wide range of scale types accommodates numerous musical genres
In addition to the conventional equal temperament and pure temperament types of tuning, a wide
variety of scales is also available. These scales include the Werkmeister III, Kirnberger III, Arabic,
and Indonesian scales. These scales cover a broad range of musical genres, from classical to
various ethnic music, and prove extremely useful in the creation of realistic simulations of various
Western music generally uses a twelve-tone equal temperament that allows you to play in any key
and to transpose the key easily. However, the X5DR provides various scale types that will make
the sound of chords and the flow of phrases more beautiful, and which will allow you to perform
music utilizing temperaments other than the equal temperament, including the very complex and
subtle temperaments used in many ethnic musical pieces.
Multi Mode for GM
Since the X5DR conforms to the GM (General MIDI) standard in Multi mode, it can function as
a tone generator for computer music. It can also play GM songs (performance data designed for a
GM tone generator). Using original Programs in Bank A, or utilizing Key Window and Velocity
Window parameters, you can perform high-quality ensemble pieces.
The X5DR can be used as a GM tone generator with standard specifications. You can also combine
different Programs and play original Programs via computer.
Equipped with a personal computer interface
The built-in computer interface enables a direct connection to the serial port of your personal
computer (Apple Macintosh or IBM-PC compatible).