LR adとは 意味・読み方・使い方

名詞

LRAD (plural LRADs)

1. Initialism of long-range acoustic device: an acoustic hailing device used to send messages and warning tones over longer distances or at higher volume than normal loudspeakers.
   • 2017 August 10, Nicole Chavez, “Using sound to attack: The diverse world of acoustic devices”, in CNN‎, archived from the original on 20 November 2022:

     Since the early 1990s, long-range acoustic devices – also known as LRADs – have helped authorities control crowds of people, especially protesters. They emit a loud, painful sound over a long distance and make people run away.

   • 2018 December 12, Jacqueline Howard, “Cuba ‘acoustic attack’ mystery continues as study offers more details on US diplomats’ symptoms”, in CNN‎, archived from the original on 20 May 2019:

     “The energy may be acoustic, pressure waves, you’ve probably heard of LRAD devices (or long-range acoustic devices) – devices they’ve discussed in the press – so ultrasound is one mode that could be used for this. We also could have radiofrequency.

アナグラム

• ARLD, LDAR, Lard, darl, lard