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Korg OASYS

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OASYS
File:Korg oasys.jpg
Korg OASYS
ManufacturerKorg
Dates2005 -
Price$8000 - $8500
Technical specifications
Polyphony172 for HD-1, CX-3, & PolysixEX; 96 for AL-1; 48 for STR-1 & MS-20EX (all maximum; may vary depending on other sounding voices and effects)
Synthesis typePCM, Wave Sequencing, Vector, Physical Modelling, Sampler, Analog Modelling
Aftertouch expressionyes
Velocity expressionyes
Storage memory1GB RAM, upgradable to 2GB. No physical ROM. Preloaded samples include 314MB "ROM" (loaded into RAM automatically at startup), and optionally-loaded 313MB EXs1 "ROM Expansion" and 503MB EXs2 "Concert Grand Piano." 0MB to 1.5GB available for user samples, depending on memory configuration and loaded EXs. Internal 40GB HDD.
Effects12 insert, 2 master, 2 total
Input/output
Keyboard76 or 88-key
Left-hand control2x Joystick, 2x Switch, Ribbon, Karma
External controlMIDI

The Korg OASYS is a workstation synthesizer released in early 2005, 1 year after the successful Korg Triton Extreme. Unlike the Triton series, the Oasys is implemented on a custom Linux operating system and is designed to be arbitrarily expandable via software updates, with its functionality limited only by the PC-like hardware.

Features

The standard Oasys comes with a hardware similar to many personal computers:

It features Korg's OASYS (acronym for Open Architecture SYnthesis Studio) technology, which allows multiple synthesis engines to be used simultaneously. The OASYS also includes second-generation KARMA technology (with the first generation having first appeared in the Korg KARMA). It has either a 76-key synth-action or 88-key hammer-action keyboard.

Synthesis engines

As of March 3, 2007 the latest version of the OASYS OS is 1.2.3, featuring the following synthesis engines:

  1. HD-1: A PCM synthesizer, with 628Mb of preloaded samples and Wave Sequencing
  2. AL-1: A 96-note polyphonic virtual analog synthesizer (84 notes in previous versions of the OS)
  3. CX-3: A modelled tonewheel organ based on the current CX-3
  4. STR-1: A plucked string physical model
  5. LAC-1: Bundle including two virtual analog synthesizers, the PolysixEX and MS-20EX, which are updated models of the vintage Korg Polysix and Korg MS20

HD-1

HD-1 Program

The HD-1 is a sample+synthesis engine with a two "oscillator" structure. In addition to the two "oscillators," an HD-1 Program contains a Vector Envelope, Common LFO (per-Program as opposed to per-voice, similar to the modulation LFOs in some early polyphonic analog synths), two common key tracking generators, KARMA settings, and effects.

HD-1 Oscillator

Each "oscillator" consists of a sample playback oscillator, dual multimode filter, nonlinear "drive" and low boost section, amp, and pan. The sample playback oscillator has four velocity zones, each of which can play a mono or stereo sample or a Wave Sequence. Velocity zones can overlap or crossfade.

Wave Sequencing

Stub.

EXi

EXi Program

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AL-1

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CX-3

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STR-1

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MS-20EX

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PolysixEX

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Notable Users


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