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E-mu Systems AUDITY Polyphonic Synthesizer System

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Audity was launched at 1980 AES Show but never shipped to market. The Audity was E-MU's hybrid synth dream machine. Three Z-80 CPUs drove the polyphonic keyboard, the control module and a refrigerator-sized 8-16 voice card box. The voice cards used the same SSM synthesizer chips designed by Dave Rossum for the Prophet 5, but in a much more capable configuration.

Technical Specifications
Type: Analog, Digital
Synthesis: Subtractive
Oscillators: 2
Waveforms: Pulse Variable, Square, White Noise
Osc Modulation: Envelope, Keyboard, Knob, LFO, Oscillator, Pitch Wheel, Sync Hard, Velocity
Envelopes: 4
Evelope Paramerters: Attack, Decay, Sustain, Release
Filters: 3
Types: 12dB Slope (2-pole), 24dB Slope (4-pole), High Pass, Low Pass, Resonance, Serial
Polyphony & Tuning
Polyphony: 16
Tuning: Standard
Modes: Polyphonic
Patches RAM: 16
Storage: Tape
Case: Keyboard
Keyboard: 61 keys, Non-weighted, Plastic
Controls: Buttons, Knobs
Display Type: LCD, Vacuum Fluorescent, Backlit
Display Count H: 24
Display Count V: 1
Audio Output Connections: 1/4" Phone Jack, Mono Out
Year Released: 1980
Units Made: 1
Used By
Peter Baumann
Design Notes:

The eventual price tag of $69,200 was too high, so it was never sold.

Peter Baumann of Tangerine Dream did buy a batch of voice boards however, and lessons learned during development helped launch the Emulator I.

The Audity resides at the Audities Foundation in Calgary and no longer functions.
MSRP List Price: $69,200 - convert

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