Method and apparatus for altering and/or minimizing...

Details Method and apparatus for altering and/or minimizing... Method and apparatus for altering and/or minimizing...

2011-04-12

2011-04-12

Enad, Elvin G (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C128S200270, C128S200290

Reexamination Certificate

active

07921964

ABSTRACT:
To reduce or eliminate the startle response in aquatic life, embodiments of the present invention alter the sound produced by a diver's exhaled bubbles by adjusting up or down the frequency of the sound produced by the bubbles.

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