Internal vent structure for waterproof microphone acoustic cavity

Internal vent structure for waterproof microphone acoustic cavity

A method and apparatus are described for providing an acoustically-resistive air-permeable venting structure (117) within a sealed microphone (105) acoustic cavity. A microphone (105) is mounted on a printed circuit board (103) and positioned within a housing (101). A water-resistant membrane (111)...

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Hauptverfasser: Meyer, David J, Lee, Gary A, Mueller, Karl F, Gruenhagen, Deborah A, Arledge, John Kevin, Miehl, Andrew P
Format: Patent
Sprache:eng
Schlagworte:
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
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creator Meyer, David J
Lee, Gary A
Mueller, Karl F
Gruenhagen, Deborah A
Arledge, John Kevin
Miehl, Andrew P
description A method and apparatus are described for providing an acoustically-resistive air-permeable venting structure (117) within a sealed microphone (105) acoustic cavity. A microphone (105) is mounted on a printed circuit board (103) and positioned within a housing (101). A water-resistant membrane (111) seals the microphone (105) from an exterior of the housing (101), and an active acoustic cavity establishes an acoustical connection between the water-resistant membrane (111) and the microphone (105). An acoustically-resistive air-permeable venting structure (117) is formed in the body of the printed circuit board (103) and connects to the active acoustic cavity either directly or via a separate vent path. The venting structure (117) provides a viscous dampening effect by venting an active acoustic cavity of the electronic device (100) to the rest of the enclosure sealed by the water-resistant membrane (111).
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subjects DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
title Internal vent structure for waterproof microphone acoustic cavity
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