Modular synthesizer

Synthesizer composed of separate modules Moog 55 (c. 1972 to c. 1981) Steve Porcaro of Toto with a modular synthesizer in 1982 Modular synthesizers are electronic musical instruments composed of separate synthesizer modules that represent different functions. The modules can be connected together by the user to create a patch. The outputs from the modules may include audio signals, analog control voltages, or digital signals for logic or timing conditions. Typical modules are voltage-controlled oscillators, voltage-controlled filters, voltage-controlled amplifiers and envelope generators. A modular synth is made up of individual modules which are combined into an instrument. A semi-modular synth allows patching within a fixed set of circuits and fixed user interface. History German engineer Harald Bode developed a modular sound processing system in the late 1950s, and this and his paper on using semiconductors in sound processing greatly influenced future development. The first prototype of the Moog synthesizer was introduced at the 1964 Audio Engineering Society convention, and the first Buchla Modular Electronic Music System was released in 1965. The Moog and Buchla were built of