Acoustic harassment device
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Acoustic harassment and acoustic deterrents are technologies used to keep animals and in some cases humans away from an area. Applications of the technology are used to keep marine mammals away from a
An acoustic pinger (active sonar) used to repel cetaceans (including dolphins and porpoises) away from fishing nets
Law enforcement officer holding a Hypershield, an acoustic hailing device used for crowd and riot control
One use of LRADs (long range audio devices) is deploying them to prevent people from entering line of fire areas
Directional sound
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Directional sound refers to the notion of using various devices to create fields of sound which spread less than most traditional loudspeakers. Several techniques are available to accomplish this, and
Acoustic harassment device
…Sonic weapon Directional sound Bird control § Deterrents - Bird Scarers…
Line array of speakers