Dog whistle

Dog whistle
A dog whistle

A dog whistle (also known as silent whistle or Galton's whistle) is a type of whistle used in the training of dogs and cats. It was invented by Francis Galton. This is discussed quite briefly in his book Inquiries into Human Faculty and its Development [1]. In his discussion (Galton 1883:26-27) of his experiments to test the range of frequencies that could be heard by various animals, he notes that cats have the most all-round sensitive hearing, being able from a considerable distance to hear notes too high in frequency for humans to hear, and small dogs can also hear these notes, while large dogs cannot.

The frequency range of a dog whistle is largely out of the range of human hearing. Humans hearing is typically considered to be between 20 Hz and 20 KHz.[2] A dog whistle is within the range of 23 to 54 kHz.[3] Some dog whistles have adjustable sliders for active control of the frequency produced. Depending on the way the whistle is used, a trainer may simply gather a dog's attention or inflict pain for the purpose of behavior modification.

The name dog whistle is often used for both lung-powered whistles as well as electronic devices that emit ultrasonic sound via piezoelectric emitters. The electronic variety are sometimes coupled with bark detection circuits in an effort to curb barking behavior.

These kind of whistles are also used to determine the hearing range of people or for physics demonstrations.


External links

Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • dog whistle — ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ noun : a whistle to call or direct a dog; especially : one sounding at a frequency inaudible to the human ear * * * dog whistle noun 1. A high frequency whistle, inaudible to the human ear, used in dog training 2. (esp in political …   Useful english dictionary

  • Dog-whistle politics — Dog whistle politics, also known as the use of code words, is a term for a type of political campaigning or speechmaking which employs coded language that appears to mean one thing to the general population but has a different or more specific… …   Wikipedia

  • dog-whistle politics — (AU) When political parties have policies that will appeal to racists while not being overtly racist, they are indulging in dog whistle politics …   The small dictionary of idiomes

  • dog whistle — /ˈdɒg wɪsəl/ (say dog wisuhl) noun a whistle that produces a sound so high pitched that dogs are able to hear it while humans cannot …  

  • dog whistle — noun a) A high pitched whistle, inaudible to humans, used to train dogs. b) An allusion or comment made by a politician with the intent that only a certain demographic note it and recognize its significance …   Wiktionary

  • dog-whistle politics — /dɒg wɪsəl ˈpɒlətɪks/ (say dog wisuhl poluhtiks) noun politics characterised by dog whistling (def. 2) …  

  • dog-whistle politics — noun The expression of political ideas in such a manner that only a specific group of voters properly understand what is being said, especially in order to conceal a controversial message …   Wiktionary

  • dog whistling — /ˈdɒg wɪslɪŋ/ (say dog wisling) noun 1. the summoning of a dog using a dog whistle. 2. Politics the making of a public statement designed to appeal to a particular group of voters while drawing no response from the rest of the electorate. {def. 2 …  

  • Whistle — Whis tle, v. t. [1913 Webster] 1. To form, utter, or modulate by whistling; as, to whistle a tune or an air. [1913 Webster] 2. To send, signal, or call by a whistle. [1913 Webster] He chanced to miss his dog; we stood still till he had whistled… …   The Collaborative International Dictionary of English

  • Dog Pounded — Looney Tunes (Tweety) series Directed by Friz Freleng Produced by Eddie Selzer Voices by Me …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”