The Ensoniq ES-5506 "OTTO" was a 32 voice wavetable oscillator chip used in implementations of wavetable synthesizers. Musical instruments and PC sound cards were the most popular applications. OTTO is capable of altering the pitch and timbre of a digital recording, and is capable of operating with up to 32 channels at once. Each channel can have several parameters altered, such as pitch, volume, waveform, and filtering.

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  • The Ensoniq ES-5506 "OTTO" was a 32 voice wavetable oscillator chip used in implementations of wavetable synthesizers. Musical instruments and PC sound cards were the most popular applications. OTTO is capable of altering the pitch and timbre of a digital recording, and is capable of operating with up to 32 channels at once. Each channel can have several parameters altered, such as pitch, volume, waveform, and filtering. The chip is a VLSI device designed to be manufactured on a 1.5 micron double-metal CMOS process. It consists of approximately 80,000 transistors. It was part of the fourth generation of Ensoniq audio technology. Major features: Real time digital filters Frequency interpolation 32 independent voices Loop start and stop positions for each voice (bidirectional and reverse looping) Motorola 68000 compatibility for asynchronous bus communication Separate host and sound memory interface At least 18-bit accuracy 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 Implementations of OTTO: Ensoniq Soundscape S-2000 Ensoniq Soundscape Elite Ensoniq SoundscapeDB daughterboard
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  • The Ensoniq ES-5506 "OTTO" was a 32 voice wavetable oscillator chip used in implementations of wavetable synthesizers. Musical instruments and PC sound cards were the most popular applications. OTTO is capable of altering the pitch and timbre of a digital recording, and is capable of operating with up to 32 channels at once. Each channel can have several parameters altered, such as pitch, volume, waveform, and filtering.
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  • Ensoniq ES-5506 OTTO
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