Siemens Synthesizer

The Siemens Synthesizer (or "Siemens Studio für Elektronische Musik") was developed in Germany in 1959 by the German electronics manufacturer Siemens, originally to compose live electronic music for its own promotional films.

From 1956 to 1967, it had a significant influence on the development of electronic music. Among others, Mauricio Kagel, Henri Pousseur, Herbert Brün and Ernst Krenek completed important electronic works there.

History
In 1955, Siemens established an audio laboratory, the Siemens Studio für Elektronische Musik, in its Munich facilities to produce electronic music for its publicity films. Siemens engineers Helmut Klein and Alexander Schaaf were charged with assembling the components for the studio and providing a means for controlling the composition, synthesis, and recording of music. The organization of the studio was completed by 1959. A second model was installed in 1964.

The studio was closed in 1967 but its main control room and equipment have been preserved as part of a museum exhibit at the Deutsches Museum in Munich.

From 1959 until its closure, Josef Anton Riedl was director of the studio.

Technology
The Siemens Synthesizer was controlled by a set of four punch paper rolls controlling the timbre, envelope, pitch and volume. Equipment found in the studio included a bank of 20 oscillators, a white noise generator, a Hohnerola (a hybrid electronically amplified reed instrument marketed by Hohner) and an impulse generator. The synthesizer had a tonal range of seven octaves.

The Siemens Synthesizer offered a method for controlling its tone-generating facilities, modification and modulation of the sounds in real time, and the manipulation of recorded material into finished works.

Uses
Between 1960 and 1966, the studio opened its doors to many outside composers, including:


 * Bengt Hambraeus
 * Bruno Maderna
 * Ernst Krenek
 * Henri Pousseur
 * Herbert Brün
 * Iannis Xenakis
 * Josef Anton Riedl
 * Karlheinz Stockhausen
 * Mauricio Kagel
 * Milko Kelemen
 * Niccolo Castiglioni
 * Pierre Boulez