via Keyboard Magazine
"Continuing our celebration of 40 years of Keyboard, we present Bob Moog's third "On Synthesizers" column from our January/February 1976 issue, in its entirety.
An oscillator is a circuit that produces a regularly repeating waveform. When used as the signal source of an audio path, an oscillator determines the pitch of the sound. Its counterparts in acoustic instruments are vibrating elements such as the strings of a guitar or the air column of a wind instrument.
What are we hearing when we listen to an oscillator tone? And what does that have to do with the waveform that we can see on an oscilloscope screen? The answers to these two questions are vitally important to the understanding of oscillators and their roles in synthesizers."
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