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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.
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 ...
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.
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This branch of acoustic engineering deals with the design of headphones, microphones, loudspeakers, sound systems, sound reproduction, and recording. [15] There has been a rapid increase in the use of portable electronic devices which can reproduce sound and rely on electroacoustic engineering, e.g. mobile phones , portable media players , and ...
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.
A hydrophone (Ancient Greek: ὕδωρ + φωνή, lit. 'water + sound') is a microphone designed for underwater use, for recording or listening to underwater sound. Most hydrophones contains a piezoelectric transducer that generates an electric potential when subjected to a pressure change, such as a sound wave.
Besides navigating through canyons and other difficult underwater terrain, there was also a need to establish the position of the submarine prior to the launch of a nuclear missile (ICBM). In 1981, acoustic positioning was proposed as part of the U.S. military's MX missile system. [10] A network of 150 covert transponder fields was envisioned.
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