Water resistant acoustic port in ear-mouthed hearing device

摘要

Water resistant acoustic ports and electronic hearing protection devices incorporating such ports are described. More specifically, water proof acoustic ports that provide water protection for an internal sealed chamber by providing acoustically transparent inlets that are capable of withstanding external water pressure at given depth due to their volume relation to that of the internal chamber, as well as hearing protection devices incorporating such ports, are described.

主权项

1. A water resistant acoustic port, comprising:
a housing a sealed chamber within the housing, the chamber having a volume (VC), and an inlet microtube positioned in the wall of the housing and fluidically connecting the chamber to an environment external to the housing, the inlet microtube having an inlet microtube volume (VI); a hydrophobic coating that overlaps at least a portion of walls of the inlet microtube; wherein the inlet microtube volume is greater than or equal to the combined volume of VC and VI multiplied by the quantity (1−(External pressure in air/External pressure when submerged)).