The Birth Of The Vocoder And It’s Use In Modern Music (With Audio Examples)

Binary Heap

Homer Dudley‘s Speech Synthesisers, “The Vocoder” (1940) & “Voder”(1939)

The Siemens system was used by many European experimental composers throughout the 50’s and 60’s including Mauricio Kagel, Bengt Hambreus, Milko Kelemen and the director of the Munich Studio Für Elektronische Musik, Josef Anton Riedl.


A vocoder (pronounced /ˈvoʊkoʊdər/, a combination of the words voice and encoder) is an analysis / synthesis system, mostly used for speech. In the encoder, the input is passed through a multiband filter, each band is passed through an envelope follower, and the control signals from the envelope followers are communicated to the decoder. The decoder applies these (amplitude) control signals to corresponding filters in the (re)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…

View original post 1,587 more words