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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 ...
The operator's job was to start the engine and bring it up to operating speed, then to pull and release the transmission handle to start the wailing signal generation. The Chrysler Air Raid Siren produced the loudest sound ever achieved by an air raid siren. [1]
Blowing pressure – Sound level increases as blowing pressure is raised, [59] [60] although there may be an optimum pressure at which sound level peaks. [48] Aspect ratio – Sound level increases as whistle length is reduced, increasing frequency. For example, depressing the piston of a variable-pitch steam whistle changed the frequency from ...
These reflected sound waves, when added to the direct sound, cause cancellation and addition at assorted frequencies (e.g. from resonant room modes), thus changing the timbre and character of the sound at the listener's ears. The human brain is sensitive to small variations in reflected sound, and this is part of the reason why a loudspeaker ...
LOUD Audio, LLC is a professional audio company based in the United States, operating in the U.S., Canada, and Shenzhen, China. Originally founded as Mackie Designs, Inc., the name was changed to Loud Technologies Inc in 2003 to differentiate its founding subsidiary, mixing console manufacturer Mackie from its eponymous brand name.
With demand for unforgettable live performances higher than ever, key players like ASAP Sound and Nerdmatics are stepping up to meet the challenge. Jordan Stilwell , co-founder of ASAP Sound ...
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The second season of Nickelodeon's "The Really Loud House" is resuming production in Albuquerque. According to Amber Dodson, New Mexico Film Office director, the live action series has its ...