Air horn
Videos
An air horn is a pneumatic device designed to create a loud noise for signaling purposes. It usually consists of a source which produces compressed air, which passes into a horn through a reed or diap
Steam whistle from a supertanker, in Merseyside Maritime Museum, United Kingdom
Diagram of a typical locomotive air horn power chamber, showing operation
Leslie model S5T five-chime locomotive air horn.
A small portable air horn used for sporting events, boating, or safety, powered by a can of compressed gas. It is operated by pressing a button on the top.
Vuvuzela
Videos
The vuvuzela is a horn with an inexpensive injection-moulded plastic shell about 65 centimetres long, which produces a loud monotone note typically around B♭ 3. Some models are made in two parts to fa
A 2010 FIFA World Cup crowd blowing vuvuzelas
Some vuvuzelas carry a safety warning graphic.
Dutch football player Wesley Sneijder blowing on a vuvuzela