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Where is galtons whistle used?

April 26, 2017Education galton India Reference Used whistle Wordplay words

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Where is galtons whistle used?

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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. The frequency range of a dog whistle is largely out of the range of human hearing. Typically, a dog whistle is within the range of 16000 Hz to 22000 Hz with only the frequencies below 20000 Hz audible to the human ear. Some dog whistles have adjustable sliders for active control of the frequency produced.