But by the 1960s, musicians found ways to use it to create the familiar robot-voice effect.Ī vocoder requires two inputs: your voice and a “carrier,” typically a synthesizer waveform. The vocoder was developed during World War II as a way to encode and encrypt speech. But it was discovered that with certain extreme settings (notably, Retune Speed set to zero), Auto-Tune could be used to instantaneously correct pitch from note to note, in a way that sounds very unnatural.Ī vocoder, by comparison is something altogether different. Auto-Tune was originally designed to correct pitch, letting singers sound more “in tune” throughout their performance, in a manner that is transparent and natural. In basic terms, what is the difference between a vocoder and Auto-Tune?Īuto-Tune and vocoders are completely different animals, although both can be used creatively to impart an artificial, synthetic timbre to a singer’s voice. Andrew also shares some details about his work developing authentic-sounding emulations of classic analog vocoders that we’ll see in upcoming Antares products. We sat down with Antares DSP engineer Andrew Kimpel to learn about the history of these two iconic effects, how they work, and what they sound like. But while both effects modulate your voice, the technologies behind them are completely different. To the casual listener, vocoder and Auto-Tune effects sound similar, and the terms are often interchanged when describing the iconic “robotic voice” sounds that have shaped pop music over the decades.
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