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  2. Dog whistle - Wikipedia

    en.wikipedia.org/wiki/Dog_whistle

    Some dog whistles have adjustable sliders for active control of the frequency produced. Trainers may use the whistle simply to get a dog's attention or to inflict pain for the purpose of behaviour modification. In addition to lung-powered whistles, there are also electronic dog whistle devices that emit ultrasonic sound via piezoelectric ...

  3. Shepherd's whistle - Wikipedia

    en.wikipedia.org/wiki/Shepherd's_whistle

    Two 3-D-printed shepherd's whistles, with and without handles. Shepherd's whistles can be more traditionally made from a piece of folded metal. [1] A shepherd's whistle is a specialized, modulatable, variable-pitch whistle used to train and transmit commands to working dogs and other animals. Unlike other whistles, they are placed inside the mouth.

  4. Ultrasound - Wikipedia

    en.wikipedia.org/wiki/Ultrasound

    [23] [24] The wild ancestors of cats and dogs evolved this higher hearing range to hear high-frequency sounds made by their preferred prey, small rodents. [23] A dog whistle is a whistle that emits ultrasound, used for training and calling dogs. The frequency of most dog whistles is within the range of 23 to 54 kHz. [25]

  5. Did you hear all the racial dog whistles at the Republican ...

    www.aol.com/did-hear-racial-dog-whistles...

    At a time when the Republican Party is struggling to gain the support of minority voters, their first debate featured a chorus of dog whistles on issues of race.. In response to a question about ...

  6. Hearing range - Wikipedia

    en.wikipedia.org/wiki/Hearing_range

    As dogs hear higher frequency sounds than humans, they have a different acoustic perception of the world. [24] Sounds that seem loud to humans often emit high-frequency tones that can scare away dogs. Whistles which emit ultrasonic sound, called dog whistles, are used in dog training, as a dog will respond much better to such levels. In the ...

  7. Donald Trump called out for ‘racist dog whistle’ in rant ...

    www.aol.com/donald-trump-called-alleged-dog...

    Critics of Donald Trump believe he may be using racist dog whistles while discussing Black litigators and political opponents in the wake of his latest indictment.. Mr Trump was indicted yet again ...

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