Vocoder

A vocoder (name derived from voice coder, formerly also called voder) is a speech analyser and synthesizer. It was originally developed as a speech coder for telecommunications applications in the 1930s, the idea being to code speech for transmission. Its primary use in this fashion is for secure radio communication, where voice has to be digitized, encrypted and then transmitted on a narrow, voice-bandwidth channel. The vocoder has also been used extensively as an electronic musical instrument. As an instrument, it is primarily used with guitars and synthesizers and produces a sound that can be described as a "talking guitar" or "talking keyboard". Vocoders are also often used to create the sound of a robot talking.

Related Topics:
Speech - Synthesizer - Telecommunication - 1930s - Code - Digitize - Encrypted - Electronic musical instrument

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