This new weapon is called a Long Range Acoustic Device (LRAD) .

这种新型武器叫做远程定向声波发射器（LRAD）。

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They should have used other means to shake off the pirates, like a loud acoustic device.

他们本可以利用其它方式撵走海盗，比如使用强声装置。

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It is important to understand the phase characteristics of electro-acoustic device for the design and effect analysis of active noise cancellation controller.

了解电声器件的相位特性对有源消声控制器的设计及消声效果分析具有重要作用。

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Even cooler, but scarier, is HSS' amped-up cousin, the Long Range Acoustic Device.

FORBES: Magazine Article

California-based HPV Technologies recently demonstrated a "magnetic acoustic device" or MAD that can broadcast a targeted beam of sound for a more than mile.

NPR: Focused Sound 'Laser' for Crowd Control

The sonic lasso is quite a bit more complex and less portable than its rope-based cousin, involving a circular device with 16 sources of acoustic waves.

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