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ADRIEN COLLEYE
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ADRIEN COLLEYE
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Akustisches Signalinstrument, bei dem vor der elektromagnetisch angetriebenen Membran nach dem Schallkoerper oder Schallbecher hin eine zweite durch die von der Membran erzeugten Tonwellen in Mitschwingung versetzte Platte angeordnet ist
Einrichtung zur Umwandlung von intensitaetsveraenderlichen Signalen in intensitaetsgleiche Signale veraenderlicher Dauer, insbesondere zum Zwecke der Bilduebertragung