Assertion: long range acoustic device | /r/HasProperty | lrad
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Source sentences:
text: The Long Range Acoustic Device (LRAD) is a sonic weapon and acoustic hailing device developed by LRAD Corporation to send messages and warning tones over longer distances or at higher volume than normal loudspeakers.
text: Singapore's Changi airport is using an Airside Safety Rover equipped with a long range acoustic device (LRAD) to chase birds off runways.