Microphone provided with a cylindrically shaped microphone cartridge
AssigneeU.S. Philips Corporation
InventorCornelis Penning
Life of this patent
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Abstract
A microphone provided with a suspension diaphragm which serves to support a freely suspended microphone cartridge, preferably of the electret type, the suspension diaphragm being substantially coplanar with the acoustic diaphragm of the microphone cartridge. At least one groove entirely closes acoustically the air-gap surrounding the freely suspended microphone cartridge. The groove is further provided with lug-shaped flanges, one for clamping the microphone cartridge and the other for suspension from a frame, mount or microphone case. The suspension diaphragm is particularly suitable for light-weight microphone cartridges.
Claims16
A microphone assembly comprising a microphone case, a cylindrically shaped lightweight microphone cartridge including a generally planar acoustic vibratory diaphragm, a single resilient generally planar suspension diaphragm fixed to the case and supporting the microphone cartridge centrally within the microphone case so that case and cartridge form an annular air gap, the acoustic diaphragm of the cartridge being substantially coplanar with the suspension diaphragm.
An electroacoustic transducer assembly comprising a transducer cartridge housing a substantially planar acoustic vibratory diaphragm, a housing for said transducer cartridge, a single suspension diaphragm having a peripheral portion that is fixed to said housing and a generally planar inner portion including means for supporting the transducer cartridge centrally within the housing so as to form a peripheral air gap between the cartridge and housing, the single suspension diaphragm being the sole support of the transducer cartridge within the housing and with the acoustic diaphragm of the cartridge being supported substantially coplanar with the planar portion of the suspension diaphragm.
Dependencies are inferred from the claim text.