Search results
Results From The WOW.Com Content Network
Rumbler siren. A Rumbler siren is a type of emergency vehicle siren used primarily in the United States.Developed in 2007 by Federal Signal Corporation, and sounding at a low-frequency level, it is designed to be heard by motorists who may otherwise be unable to hear high-frequency sirens due to ambient noise, such as urban traffic.
Independent, unique sound library with royalty free & free sound effects - for video, sound design, music productions and more. CC0, CC BY Gfx Sounds: Yes Yes Sound library for professional and free sound effects downloads. CC0, CC BY Free To Use Sounds: Yes Yes Sound effects library with hiqh quality field recordings from all around the world.
"Reggatta de Blanc" is a 1979 musical composition by The Police, and the title track on their second album. The instrumental evolved from improvisational stage jams during early Police performances of the song "Can't Stand Losing You". [1] The track won the Grammy Award for Best Rock Instrumental Performance in 1980. [2]
The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.
The first police radio systems were implemented in Detroit in 1928, when the Detroit Police Department set up a one-way radio system to broadcast crime information to police cars. [2] The frequency was assigned the call sign "KOP" by the Federal Communications Commission .
To direct a siren's sound and to maximize its power output, a siren is often fitted with a horn, which transforms the high-pressure sound waves in the siren to lower-pressure sound waves in the open air. The electrically powered cylinder siren used to alert the town of Lowestoft during World War Two.
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. It has been used as a method of crowd control , which has caused permanent hearing damage , having an extremely high decibel capacity (up to 160 dB measured at one ...
John F. Kennedy. A Dictabelt recording from a motorcycle police officer's radio microphone stuck in the open position became a key piece of evidence cited by the House Select Committee on Assassinations (HSCA) in their conclusion that there was a conspiracy behind the assassination of John F. Kennedy on November 22, 1963.