Targeted Audio Messaging Technologies

https://media.defense.gov/2014/Sep/23/2000938555/-1/-1/0/140919-M-XW818-270.JPG
Official USMC photo by Cpl. Lauren A. Kurkimilis/released

Posted on September 16, 2019 | Completed on September 13, 2019 | By: Defense Systems Information Analysis Center (DSIAC)

What laser, ultrasonic, or similar technologies exist or are in development that can project an audio message to a targeted person or group without a receiver?

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