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‘Lydteknisk Laboratorium’ (Danish Acoustical Laboratory), a technological institute for sound was set up in 1941 as one of the first, independent, not-for-profit institutes under the auspices of the Danish Academy of Technical Sciences. The acoustical lab was a result of needs identified not least by professor P.O. Pedersen, principal of […]

1941: Danish Acoustical Laboratory (now DELTA)







October 12, 1923 Axel Petersen (1887-1971) and Arnold Poulsen (1889-1952) successfully demonstrated for the public the first sound film recorded indoors. In essence, it was the first synchronized sound movie in the world, running a 23 minutes long movie in three scenes including actor performances and musical events. It took […]

1923: Ortofon behind breakthrough in sound films