| 摘要 |
A communication device used to talk underwater. The device allows a speaker to fill a mouthpiece (22) with air while underwater and immediately begin speech thus allowing the speaker to start talking underwater with a minimal amount of air expended and not having to fill the device with air before going underwater. The mouthpiece (22) surrounds the mouth and creates an airtight seal between the device and the skin surrounding the mouth (20). Connected to the mouthpiece (22) is an air chamber (23) that is shaped to substantially minimize the amount of acoustic energy, or sound, being reflected back into the speaker's mouth through the mouthpiece (22). At the bottom of the air chamber (23) is a venting area (24) with small perforations to allow the air to escape the device in small and relatively quiet bubbles.
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