Moving coil microphone transducer with secondary port
AssigneeShure Acquisition Holdings, Inc.
InventorRoger Stephen Grinnip, III
Life of this patent
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Abstract
A microphone transducer is provided, the microphone transducer comprising a housing and a transducer assembly supported within the housing and defining an internal acoustic space. The transducer assembly includes a magnet assembly, a diaphragm disposed adjacent the magnet assembly and having a front surface and a rear surface, and a coil attached to the rear surface of the diaphragm and capable of moving relative to the magnet assembly in response to acoustic waves impinging on the front surface. The transducer assembly further includes a primary port establishing acoustic communication between the internal acoustic space and an external cavity at least partially within the housing, and a secondary port located at the front surface of the diaphragm.
Claims19
A microphone transducer, comprising:
- a housing;
- a first transducer assembly supported within the housing and defining an internal acoustic space, the first transducer assembly including a magnet assembly, a diaphragm disposed adjacent the magnet assembly and having a front surface and a rear surface, and a coil attached to the rear surface of the diaphragm and capable of moving relative to the magnet assembly in response to acoustic waves impinging on the front surface;
- a primary port establishing acoustic communication between the internal acoustic space and an external cavity at least partially within the housing;
- and
- a secondary port passing through the diaphragm.
A moving coil transducer assembly for a microphone, the transducer assembly comprising:
- a magnet assembly;
- a diaphragm disposed adjacent the magnet assembly, the diaphragm having a front surface and a rear surface;
- a coil attached to the rear surface and capable of interacting with a magnetic field of the magnet assembly in response to acoustic waves impinging on the front surface;
- a first acoustic path adjacent the rear surface of the diaphragm;
- and
- a second acoustic path through the front surface of the diaphragm.
Dependencies are inferred from the claim text.