Ensoniq ES-5506 OTTO

Ensoniq OTTO Synthesizer

The Ensoniq ES-5506 "OTTO" was a 32 voice wavetable oscillator chip used in implementations of sample-based synthesis. 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 micrometre double-metal CMOS process. It consists of approximately 80,000 transistors. It was part of the fourth generation of Ensoniq audio technology.

Major features:

Implementations of OTTO:

References

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