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A party whistle A metal pea whistle. A whistle is a musical instrument which produces sound from a stream of gas, most commonly air. It may be mouth-operated, or powered by air pressure, steam, or other means. Whistles vary in size from a small slide whistle or nose flute type to a large multi-piped church organ.
A trailing edge tone occurs when an exterior flow passes over a trailing edge. There is a whistle that is a combination of an edge tone and a trailing-edge tone and might be called a wake-edge tone. It occurs in rotating circular saws under idling conditions and may be called the circular-saw whistle. Under load conditions, blade vibration ...
An offstage whistle audible to the audience in the middle of a performance might also be considered bad luck. Transcendental whistling ( chángxiào 長嘯) was an ancient Chinese Daoist technique of resounding breath yoga, and skillful whistlers supposedly could summon supernatural beings, wild animals, and weather phenomena.
Silbo Gomero (Spanish: silbo gomero [ˈsilβo ɣoˈmeɾo], "Gomeran whistle"), also known as el silbo ("the whistle"), is a whistled register of Spanish used by inhabitants of La Gomera in the Canary Islands, historically used to communicate across the deep ravines and narrow valleys that radiate through the island.
The titular word zhǐ 旨 means "intention; aim; meaning", and the translator E. D. Edwards says the text is about "How to Whistle". [64] Paul W. Kroll translates Xiaozhi as "Directives on Whistling". [65] There are two theories regarding the origin of the "Principles of Whistling". [66]
Phreaking began in the 1960s when it was discovered that certain whistles could replicate the 2600 Hz pitch used in phone signalling systems in the United States. [3] Phone phreaks experimented with dialing around the telephone network to understand how the phone system worked, engaging in activities such as listening to the pattern of tones to figure out how calls were routed, reading obscure ...
According to Adam Edwards of Daily Express, the wolf whistle originates from the navy General Call made with a boatswain's pipe. The General Call is made on a ship to get the attention of all hands for an announcement. Sailors in harbour would whistle the General Call upon seeing an attractive woman to draw fellow sailors' attention to her.
However one can manipulate the sound of the whistle by changing the speed at which one is blowing air through the instrument and by changing one's embouchure. Audio example of variations in apito de samba can be found online. [3] Sound of a wood samba whistle can be also heard online (1:46 – 2:08). [4]