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2. Vuvuzela - Wikipedia

   en.wikipedia.org/wiki/Vuvuzela

   The vuvuzela / v uː v uː ˈ z ɛ l ə / is a horn, with an inexpensive injection-moulded plastic shell about 65 centimetres (2 ft) long, which produces a loud monotone note, typically around B♭ 3 [2] (the first B♭ below middle C). [3] Some models are made in two parts to facilitate storage, and this design also allows pitch variation.

3. Horn loudspeaker - Wikipedia

   en.wikipedia.org/wiki/Horn_loudspeaker

   A horn loudspeaker is a loudspeaker or loudspeaker element which uses an acoustic horn to increase the overall efficiency of the driving element(s). A common form (right) consists of a compression driver which produces sound waves with a small metal diaphragm vibrated by an electromagnet, attached to a horn, a flaring duct to conduct the sound waves to the open air.

4. Chrysler Air-Raid Siren - Wikipedia

   en.wikipedia.org/wiki/Chrysler_Air-Raid_Siren

   Its six horns are each 3 feet (91 cm) long. The siren has an output of 138 dB(C) (30,000 watts), and can be heard as far as 25 miles (40 km) away. In 1952, the cost of a Chrysler Air Raid Siren was $5,500 [1] (equivalent to $65,076 as of May 2024). The United States government helped buy sirens for selected state and county law enforcement ...

5. Brightline trains: How loud are horns compared to FEC ... - AOL

   www.aol.com/brightline-trains-loud-horns...

   Sounds at 120 decibels, comparable to an emergency vehicle siren, may cause discomfort to human hearing, according to the National Council on Aging.

6. Can you blow your horn at other drivers for any reason? What ...

   www.aol.com/blow-horn-other-drivers-reason...

   Under the law, drivers also cannot have a horn that emits “an unreasonably loud or harsh sound or a whistle.” You can have an air horn train horn on your vehicle, but you can’t use it legally.

7. Vehicle horn - Wikipedia

   en.wikipedia.org/wiki/Vehicle_horn

   Again, these horns can be either single, or arranged in pairs; typical frequencies for a pair are 420–440 Hz and 340–370 Hz (approximately G ♯ 4 –A 4 and F 4 –F ♯ 4) for this design. Diagram showing how a car horn works. A horn grille is a part of some designs of car or other motor vehicle that has an electric horn, such as a motor ...