(Photo by Erling Mandelmann)
February 27, 1929|
|Died||January 26, 2013
|Occupation||Founder of the Kudelski Group (1951–1991)|
|Known for||Creating the Nagra audio recorders|
Kudelski was born in Warsaw into a family with engineering background. In September 1939 the family fled Poland during the Nazi German and Soviet Invasion of Poland. They escaped to Romania, then moved to Hungary, and on to France. When the Germans occupied southern Vichy France, the family escaped to Switzerland in 1943. He studied at the Swiss Federal Institute of Technology in Lausanne and constructed his first tape recorder there, as a student project. The recorder was supposed to drive a machine tool, but was good enough to record audio as well.
- 1951 - Kudelski built his first Nagra tape recorder
- 1957 - The Nagra III, a transistorized tape recorder with electronic speed control, is launched
Kudelski received many awards during his career:
- Academy Awards: Scientific or Technical Award (1965, 1977 and 1978) 
- Gordon E. Sawyer Award (1990)
- Emmy Awards (1984 and 1986) 
- Gold Medals from L. Warner, AES (1984), Lyra and Eurotechnica.
- Death of Mr Stefan Kudelski , Nagra
- Academy Awards Data Base  "Stefan Kudelski"
- NATIONAL ACADEMY OF TELEVISION ARTS AND SCIENCES, Outstanding Achievement in Technical/Engineering Development Awards  "page 5"
- Thomas Mulier (Jan 28, 2013). "Stefan Kudelski, Sound-Recording Equipment Inventor, Dies at 84". Bloomberg.
- June 1966 American Cinematographer article about Kudelski's first Oscar
- French language article about Kudelski's work
- Short biography at nagra.com
- Nagra history
- Wings Award
- AES gold medal Award
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