Ideophone I by Dick Raaijmakers
Ideophone I was first presented by Dick Raaijmakers in 1967 at the opening of the Steim Studio for Electro-Instrumental Music in Amsterdam. Raaijmakers' primary concept is that of a loudspeaker that functions as an active ‘speaker’, and produces its own sound. The artist realised the idea by connecting the output to the input of the loudspeaker in the rotating sculpture. As a result, the loudspeaker can now produce sound using its own signal without requiring an external input.