Vehicle horn horn. Bicycles often have a classic "bulb horn", operated by squeezing a rubber bulb attached to a metal horn. Squeezing the bulb forces air through a steel reed located in the throat of the horn, making it vibrate, producing a single note. The flaring horn matches the acoustic impedance of the reed to the open air, radiating the sound waves efficiently, making the sound louder. Other types of horns used on bicycles include battery-operated horns (sometimes even car horns on 12-volt circuits are incorporated) and small air horns powered by a small can of compressed gas. Oliver Lucas of Birmingham,
A Cool Sound from Hell they become involved with drugs. The soundtrack was provided by jazz great Phil Nimmons. Shortly after making this film Furie left for England where his career took off in 1961 with "The Young Ones" starring Cliff Richard. A Cool Sound from Hell A Cool Sound from Hell is a 1959 Canadian film directed by Sidney J. Furie. Despite having been filmed in Toronto, Ontario, Canada, the film was released theatrically only in England, and never screened in North America. The film was later thought to have been lost, but was eventually located in British Film Institute archives and finally had