Gottfried Michael Koenig – Klangfiguren I (1955)
Rise of the machines, 1939.
Thought vocoders are from the 60s / 70s?
Pioneers of electronic music with Orphée 53 (1953).
Charming explanation of soundwaves from 1933.
Retro time = fun time. Music recording techniques from the past to the future. Well, from an 1979 point of view. Part 1 of 4.