Korg Z1 Physical Modeling Synth

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"PHYSICAL MODELING Synth!

There many ALGORITHMS whose structure can be routed in 13 path signal or algorithms roughly organized in 2 family groups: - Virtual analog (7 algorithms) + Virtual acoustic (6 algorithms)

ELECTRIC PIANO MODEL
REED MODEL
PLUCK MODEL
ORGAN MODEL
BOWED STRING MODEL
STANDARD OSC
COMB FILTER
VPM OSC (Phase Modeulation)
RESONANCE OSC (Bandpass resonant)
OSCILLATOR SYNC (Slave Oscillator)
RING MOD
CROSS MOD


DETAILED DESCRIPTION:

ELECTRIC PIANO MODEL a EP Rhodes emulation features 4 main parameters:
- hammer defines the shape, strength and the motion of the hammer that virtually hits tines
- tone generator: sets the tine dimension and its overtones
- pickup: sets the position and dimension of virtual pickup
- EQ: simple EQ with Shelving at +/- 18 dB range.
pot1 BRASS MODEL physical model of simulation of brass lip-reed instruments with 4 parameter settings:
- instrument defines preset shapes and length of the virtual instruments according to 7 presets of brasses and reeds.
- pressure: is the breath force blown into the virtual instruments, whose settings can be assigned to expression controller such as aftertouch or wheel.
- lip: defines shape and tension of the lips that variates timbre colors.
- bell: defines the shape of the damper and resulting variable tonal changes and resonances.
Special bending modes: linear for trombone or jumping for a piston valves emulation.

REED MODEL physical model of simulation of woodwind reed instruments.
13 preset instruments emulation such as saxophones, double reed, bassoon, clarinet, flute, pan flute, ocarina, shakuashi, harmonica and reedsynth (variable physical dimension and reed characteristics)

PLUCK MODEL simulates a plucked string like guitar or bass with 4 parameters:
- attack: alters the waveform when a string is plucked
- string: defines position of string plucking and defines some harmonics settings to match physic characteristics such as thickness or flexibility
- damp: attenuates harmonics for a kind of matched filter key tracker
- pickup: same principle as algorithm number 9.

pot1 ORGAN MODEL additive synthesis for Hammond-like organs with drawbars emulation. Each drawbar features 3e sinewave variations from pure wave to various levels of altered harmonics. A click percussion can be added with variable amplitude and lengthdemo


BOWED STRING MODEL simulates bowed string instruments such has a violin with 4 parameters:
- bow: defines intensity of the bow on the strings while the X-Y pad simulates the bow velocity
- damp: attenuates harmonics
- reflection: specify the amount of the wave that are reflected at the end of the string.
- string: various parameters regarding the string structure and point of contact with bowdemo



multi mode STANDARD OSC generates basic waveforms like a traditional analog synthesizer.
Each oscillator can be either a sawtooth or a pulse mixed to a ramp progressive wave from sinewave to triangle. The sawtooth and pulse waves feature advanced parameters e.g edge, smoothing, width, phasing and 99 waveshaping table (from classic KORG 01/W)

multi mode COMB FILTER the signal from the other oscillator waveform (or the noise generator) is sent through a comb filter and the feedback level of the comb filter is altered in order to produce a tonal change. The FEEDBACK parameter raises resonance level and DAMP smoothes it.
Input to comb can be either: filter, noise, impulse or subosc or any combination of them.

multi mode VPM OSC the carrier output is phase-modulated by a modulator and output through waveshape processing. Carrier and Modulator features 4 basic shapes (saw, sine, triangle and square) and special OSC MODULATOR is an oscillator from any other algorithm.
The waveshaper processes the oscillators trough 99 different waveforms, altering the spectral contents with new resonances and distortions.

multi mode RESONANCE OSC 4 resonant bandpass filters with variable harmonics process.
Each filter mode can be controlled by assignable modulation source such as LFO or Midi Control Change.\

multi mode OSCILLATOR SYNC a slave oscillator is synched to a master osc wave cycle: when master osc starts new cycle, the slave phase is reset to zero and begins a new cycle.

multi mode RING MOD standard ring modulation with 5 variable inputs:
- osc 1 & 2
- filter 1 & 2
- subosc
- noise
- carriers: saw, square, sinewave and triangledemo

multi mode CROSS MODULATION quite similar to RING MOD but uses a modulator to frequency modulate a carrier."