You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "who invented the protocol of one volt per octave?" whose answer is Bob Moog.
Each document should contain about 30 words, and these documents should contain useful information.

Query: invention of one volt per octave protocol
Useful Output:

Doc 1: We use control voltages to automate and manipulate synthesizer parameters. Volts per octave (V/8) and Hertz per volt are special types of
Doc 2: 1v/oct stands for 1 volt per octave. It is a system that Moog came up with in the early days. One volt corresponds to one musical octave.
Doc 3:  voltage is increased or decreased with a ratio of 1 Volt per octave.  invented in 1967 a modular voltage controlled instrument – the Voltage
Doc 4: The more common implementation - invented by Bob Moog - is the linear standard of volts per octave (V/oct) whereby an increase in one volt
Doc 5: Eurorack uses a standard of 1 volt per octave (1V/OCT) to set the pitch of oscillators in order to generate musical notes. This means that the 12 notes of a