John M. Reynard - Framingham MA Thomas N. Carignan - Danvers MA Richard Paglia - Carlisle MA Joseph F. Rich - Danvers MA
Assignee:
Polaroid Corporation - Cambridge MA
International Classification:
H04R 714 H04R 1900
US Classification:
179111R
Abstract:
A method and device for significantly improving the efficiency and sensitivity of an electroacoustical transducer. A relatively inelastic vibratile diaphragm is preformed to the shape of a mating backplate prior to the time it is actually mated to said backplate. By such preforming, the efficiency and sensitivity reducing effects from a wrinkled transducer diaphragm are minimized in that said wrinkles move to a diaphragm region where they have no effect on transducer sensitivity when the backplate is subsequently mated to said diaphragm.
Method For Controlling Wrinkles In A Vibratile Diaphragm
John M. Reynard - Framingham MA Thomas N. Carignan - Danvers MA Richard Paglia - Carlisle MA Joseph R. Rich - Danvers MA
Assignee:
Polaroid Corporation - Cambridge MA
International Classification:
H04R 1900
US Classification:
179111R
Abstract:
A method and device for significantly improving the efficiency and sensitivity of an electroacoustical transducer. A relatively inelastic vibratile diaphragm is preformed to the shape of a mating backplate prior to the time it is actually mated to said backplate. By such preforming, the efficiency and sensitivity reducing effects from a wrinkled transducer diaphragm are minimized in that said wrinkles move to a diaphragm region where they have no effect on transducer sensitivity when the backplate is subsequently mated to said diaphragm.