TECH CPU UPD-70433GD manages 1 voice based MOSS Multi Oscillator Synthesis System - MOSS synthesis is complicated but offers great sonic possibilities aimed to emulate modelled acoustic brass and reed instruments.
STRUCTURE: a patch is created by a layer of 4 elements:
- MOSS digital oscillator 1
- MOSS digital oscillator 2
- digital white noise
- suboscillator 4 shapes: sine, square, saw and triangle.
OSCILLATOR each digital MOSS oscillator features:
5 Virtual Acoustic sound generations
Special APM generates 3 sub-models.
The sound generators
that can be chained in pair following 12 different algorithms models.
TECH: *Acoustic physical modeling APM cannot use combinations for DSP limit.
VA SOUND GENERATORS BRIEF DESCRIPTION:
EDIT INTERFACE: some real-time tweaks but MANY functions in MANY sub-menus:
CARD EXPANSION some different models were available, but they are basically plain sysex you can find on the net, we will soon share the file (DOWNLOAD) as these cards are no more available on the market.
||"Analogue & Vintage "
LFO up to 4 delayed digital modulators, frequency range from 0 to 60 Hz also syncable to external Midi clock like sequencer or drum machines. A vast array of 26 shapes with variable phase offset.
ENVELOPE up to 6 EGs, 4-segments structure + 5 time levels:
EG 1 is routed to amplitude
- EG 2 is routed to pitch
- EG 3-4-5-6 are freely assignable to quite any parameters
The Prophecy response also features 8 dynamic curves.
FILTER features 2 identical filters at -12d/B octave combined in both serial or parallel way.
Each filter can be set to a 1 of 3 filter modes:
- bandpass and reject.
EFFECT DSP generates 7 models: distortion, wah, EQ, chorus, flanger, delay and reverb.
ARPEGGIATOR 5 preset patterns, adjustable velocity and gate length and 3 directions: up, down and random. Both arpeggiator and LFO can be synched to external Midi clock, but it is reported that earlier Prophecy operating systems OS have some tempo issues.
Last eprom sets (2) are OS #20.
128 editable memory patches
- 1 custom arpeggio slot
64 others on S-Ram card model Korg SCR-512.
Factory patches are stored in ROM for immediate recall, check out the procedure described in the right column.
BATTERY REPLACEMENT: a cr2032 3V in a battery holder, quite easy.
CUSTOM the Prophecy seems to be widely used in eastern Europe countries (the amza) and Balkans, appreciated for matching some typical music with different scales interval tones.
Below custom model with :
| touch keyboard by Ken Mc Beth
||funny accordion keys
- Soundquest (PC/MAC commercial) PIC
- Progenie (old PC OS , commercial) PIC
- Prophy (Atari ST / Falcon, FREE) PIC
CTRLR panel (open source, FREE) pic below
| Z1 polyphonic brother with more APM modeling models, enhanced analog emulation with progressive waveforms. The big polyphonic brother totally obscured the Prophecy.
| SOLO-TRI board optional adds MOSS synthesis to Trinity keyboards.
VST PLUGIN / SAMPLED VERSION no official Korg plugin, however some physical modeling synthesis plugin VST are availabe- some free and commercial samples set:
||35 MB free sample pack