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Output of a computer model of underwater acoustic propagation in a simplified ocean environment. A seafloor map produced by multibeam sonar. Underwater acoustics (also known as hydroacoustics) is the study of the propagation of sound in water and the interaction of the mechanical waves that constitute sound with the water, its contents and its boundaries.
Underwater acoustic communication is a technique of sending and receiving messages in water. [1] There are several ways of employing such communication but the most common is by using hydrophones . Underwater communication is difficult due to factors such as multi-path propagation , time variations of the channel, small available bandwidth and ...
Underwater Audio is an electronics company that invents, manufactures, and distributes waterproof gadgets such as headphones, earphones, iPod Shuffles, and waterproof smart devices for swimmers. [1] Brigham Young University marketing graduate Scott Walker established the company as a junior in college in 2011.
USBL (ultra-short baseline, also known as SSBL for super short base line) is a method of underwater acoustic positioning. A USBL system consists of a transceiver, which is mounted on a pole under a ship, and a transponder or responder on the seafloor, on a towfish, or on an ROV. A computer, or "topside unit", is used to calculate a position ...
Underwater acoustics was used for detecting submarines in the first World War. Sound recording and the telephone played important roles in a global transformation of society. Sound measurement and analysis reached new levels of accuracy and sophistication through the use of electronics and computing.
Most of the work was performed in liquids (for underwater sound use). The first modern device for air acoustic use was created in 1998, [1] and is now known by the trademark name "Audio Spotlight", a term first coined in 1983 by the Japanese researchers [2] who abandoned the technology as infeasible in the mid-1980s.
Acoustic Research: United States Advent: United States Ahuja: India Alesis: United States Altec Lansing: United States Amphion Loudspeakers: Finland Anker: China Armstrong Audio: United Kingdom Audiovox: United States Audison: Italy Auro-3D: Belgium Bang & Olufsen: Denmark Barefoot Sound: United States BassBoss: United States Behringer: Germany ...
The search and inspection of the lost nuclear submarine USS Thresher by the U.S. Navy oceanographic vessel USNS Mizar in 1963 is frequently credited as the origin of modern underwater acoustic navigation systems. [7] Mizar primarily used a short baseline (SBL) system to track the bathyscaphe Trieste 1. However, its capability also included ...
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