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ii Introduction
SPECIFICATIONS
• Polyphony/multitimbral capabilities
Maximum polyphony: 64 voices. Multitimbric-
ity: 16 parts (Style/RealTime modes) or 32
parts (Song mode). Each part is assigned to
a track. In Style/RealTime mode 8 tracks are
assigned to the keyboard and the other 8 to
the auto-accompaniment section.
• Sound generation
Based on sampled waveforms (Wave), modi-
fied by programmable digital filters (DCF, Dig-
itally Controlled Filters). Waves are assigned
singularly or in pairs up to a maximum of 3
Layers, to obtain Sounds consisting of a max-
imum of 6 Waves per voice.
• ROM-Sounds
ROM (permanent memory) contains 8 mega-
bytesofsamples,whicharethesource of over
600 ROM-Sounds.
• RAM-Sounds
You can load disk-based RAM-Sounds based
on samples contained in ROM. RAM Sounds
canbesuppliedby Generalmusic, by thirdpar-
ties, or can be created by the user with the
optional sound editor program. Sounds can
be loaded from WK4 or WX/SX Series disks.
• Performance-Sounds
The “Edit Perf Sound” and “Edit Sound Patch”
functionspermitsquickmodification of Sounds
and Drumkits to produce “Performance-
Sounds”. The modifications are stored in Per-
formance tracks to allow Songs, Styles or Per-
formances to load the correct sounds.
• System-RAM
System-RAM is the microprocessor memory
zone, also used to store Songs, programma-
bleStyles,Performances andRAM-Soundsaf-
ter powering up the instrument. It is backed
by a rechargeable battery. The amount of
available memory to store the data is approx.
1.9 megabytes (1.6 Mb as standard System-
RAM boosted to 1.9 Mb by a DRAM included
with the instrument).
• Backed S-RAM (optional)
WK4 can be fitted with an optional 2 mega-
bytes of RAM for samples (Waves), backed
by a Ni-Cd battery to retain data after turning
offtheinstrument. Sample-RAMallowsto load
new samples (Waves) on which RAM Sounds
can be based.
• Volatile Sample RAM (optional)
It is possible to install up to 32 megabytes of
additional Sample-RAM via standard 30 pin
computer SIMMs obtainable from most com-
puter outlets.
• Digital Effects Processor
Four Digital Effects Processors, controlled in
realtime, enrichthesound witheffects(reverbs
and modulations). A flexible matrix allows dif-
ferent effects to be assigned to every track.
• Sequencer
The 32 track sequencer has a Microscope
function (microscopic edit) and Score facility
(to display Score, chords and Lyrics). The
QuickRec recording method allows the rapid
recording of a Song by using existing Styles.
ThestandardSystem-RAMallows you to store
up to 250.000 events distributed through 16
Songs.
• Jukebox & Preload
The Jukebox function allows you to chain the
Songs in memory and play them one after the
other with a single command. The Preload
function allows you to create a list of disk-
based Songs or MIDI file and play them all by
meansofasingle command, without first load-
ing all data in memory.
• Automatic accompaniment
Styles provide automatic musical accompani-
ments, consisting of 8 tracks. Every Style has
4Variations. Up to 32diskbased Styles(User
programmable) can be loaded and automati-
callystoredin thebatterybacked systemmem-
ory.
• Disk drive
Data can be stored on 3.5" HD floppy disks, in
WK4
expandedformat(1.6megabyte)orstand-
ard MS-DOS (1.44 megabyte). The Atari ST/
Falcon format (720 Kb) can be used for MIDI
file exchanges. WK4 is able to initialize disks
for every format. It is possible to load RAM-
Sounds, Styles, and Songs from WK4, WX2,
