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A tourist in a sleeping bag. A sleeping bag is an insulated covering for a person, essentially a lightweight quilt that can be closed with a zipper or similar means to form a tube, which functions as lightweight, portable bedding in situations where a person is sleeping outdoors (e.g. when camping, hiking, hill walking or climbing).
Another problem is that the sound radiation from the exit of the line is spread over a quite broad frequency range caused by the hump of the quarter-wave transmission line resonance, whereas the high-Q port resonance of a vented-box loudspeaker rolls off much more quickly and extends over a much narrower frequency band. [12]
An NYPD LRAD on top of a police humvee An LRAD operator wearing hearing protection LRAD on a navy ship. A long-range acoustic device (LRAD), acoustic hailing device (AHD) or sound cannon is a specialized loudspeaker that produces sound at high power for communicating at a distance.
If you've been shopping in a big box retail store you've probably heard an announcement on the loudspeaker such as, "code yellow toys, code yellow toys." This "code" is one of many innocuous ...
Credits . Creative Directors. Carina Kolodny & Marc Janks . Art Direction. Adam Glucksman . Web Design. Isabella Carapella & Ji Sub Jeong . Motion Graphics & Graphic Design
Hotblack Desiato is the guitar keyboard player of the plutonium rock group Disaster Area, claimed to be the loudest band in the universe, and in fact the loudest noise of any kind, anywhere. So loud is this band that the audience usually listens from the safe distance of 37 miles (60 km) away in a well-built concrete bunker.
Related: Madonna Gets Another Tattoo as a Tribute to Her Late Mom: 'My Turn to Bleed for My Mother' Earlier this year, Madonna remembered her late mom on Mother’s Day as she shared an emotional ...
Seven soldiers will receive Medals of Honor decades after their acts of heroism. Some military experts say the delays may be because of their race.
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