Internal vent structure for waterproof microphone acoustic cavity

• Main Authors: John Kevin Arledge, Deborah A Gruenhagen, David J Meyer, Andrew P Miehl, Gary A Lee, Karl F Mueller
• Format: Patent
• Language: English
• Published: 05.12.2018
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

A printed circuit board assembly 409 for a sealed electronic device comprises a microphone mounted on the printed circuit board, a first acoustic input hole 417 formed through the printed circuit board adjacent to the microphone and an acoustically resistive air permeable venting structure 401 forme...