1. Rather than using pure volume to throw sound far, the LRAD reaches distant ears by focusing the audio beam.
甚至用一种纯洁的声音传播的远远的，LRAD通过聚集的声音柱将声音传到远方的耳朵里。
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2. When in weapon mode, LRAD blasts a tightly controlled stream of caustic sound that can be turned up to high enough levels to trigger nausea or possibly fainting.
3. LRAD has been used successfully, in one instance protecting a large cruise ship from pirates off the coast of Somalia who had rocket-propelled grenades and machine guns.
4. LRAD has been used successfully, in one instance protecting a large cruise ship from pirates off the coast of Somalia who had rocket-propelled grenades and machine guns.
