Trans is the thirteenth studio album by Canadian musician and singer-songwriter Neil Young, released on January 10, 1983. Recorded and released during his Geffen era in the 1980s, its electronic sound baffled many fans upon its initial release—a Sennheiser vocoder VSM201 features prominently in six of the nine tracks.
Trans (album)
A vocoder is a category of speech coding that analyzes and synthesizes the human voice signal for audio data compression, multiplexing, voice encryption or voice transformation.
Early 1970s vocoder, custom-built for electronic music band Kraftwerk
Schematic circuit of Dudley's Vocoder (based on: Dudley 1940, p. 508, Fig.7)
SIGSALY (1943–1946) speech encipherment system
HY-2 Vocoder (designed in 1961), was the last generation of channel vocoder in the US.