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32-Voice Wavetable Oscillator Chip

The ES 5506 OTTO chip is a sample playback synthesizer designed to play back digital recordings. It creates one or more complete musical instruments through onboard signal processing.

 Unlike a CD player, which only plays back the signal as recorded, OTTO is capable of altering the pitch and timbre of a digital recording and operating with 32 channels (voices). Each channel provides independent control of pitch, volume, waveform, and filtering.

 OTTO is a VLSI device designed in a 1.5 micron double-metal CMOS process. It contains approximately 80,000 transistors. The device is the fourth generation of audio technology from ENSONIQ. All calculations are made with at least 18-bit accuracy.

The major features of OTTO are:

 Real time digital filters
 Frequency interpolation
 32 independent voices
 Loop start and stop positions for each voice
 Bidirectional and reverse looping
 68000 compatibility for asynchronous bus communication
 Separate host and sound memory interface
 6 channel stereo serial communication port
 Programmable clocks for defining serial protocol
 Internal volume multiplication and stereo panning
 A to D input for pots and wheels
 Hardware support for envelopes
 Support for dual OTTO systems
 Optional compressed data format for sample data
 Up to 16 MHz operation

1997 ENSONIQ Corp.   All rights reserved.            
Prices and specifications subject to change without notice.

last updated on
9/23/97 by RKB