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The Roland JD-990 Super JD is a module version of Roland JD-800 synthesizer with expanded capabilities, which was released in 1993. JD-990 is a multitimbral synthesizer utilizing 'wave-table' sample-based synthesis technology. It is equipped with 6 MB of ROM containing wave-table, four sets of stereo outputs that are assignable to individual, internal, instruments, and standard MIDI in/out/through ports. JD-990 has a large LCD display and programming takes place through a keypad on the front panel of the unit. The unit can generate multi-timbral sounds reminiscent of the vintage analog synthesizers but is also capable of generation of modern digital textures. There are several expansion boards available for JD-990 that can be installed in the provided expansion slot in the chassis of the unit. The JD-990 had the following features which were not available on the JD-800: # Expanded wave ROM (6 MB vs. 3 MB) # Ability to use an 8 MB expansion board from the SR-JV80 series # JV-80 patch import # 4 additional outputs # True stereo engine # Individual panning of each tone in a patch # Oscillator sync # Frequency cross-modulation (FXM) # Matrix Modulation # Modulation of the same destination from multiple sources # Oscillator structures that allow ring modulation and serial dual filters # Additional LFO waveforms: sine, trapezoid and chaos # MIDI CC control of parameters # Tempo sync delay # Polyphonic portamento # Analog Feel. Adds a very subtle pitch modulation to the basic waveforms intended to recreate an analogue synth's 'drift' # Performance memories # Additional multitimbral slots # One patch can keep full effects in multi mode ==Factory Sounds== The Factory presets of the JD-990 were created by Eric Persing and Adrian Scott. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Roland JD-990」の詳細全文を読む スポンサード リンク
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