Posted by admin | Posted in Dog Care Tips | Posted on 03-03-2009
Tags: animals, bulldog, dog, english, francis
A question science?
When a small child blowing a dog whistle, the dog came from, even though the child can not hear the whistle. Explain why the child can not hear the whistle, but your dog can. One reason is because the frequency could be very high (more than 20,000 hz) I can not think anything else
Do you think you are correct. Usually, a dog whistle is within the range of 16,000 Hz to 22,000 Hz, with frequencies only below 20000 Hz audible to the human ear. Some dog whistles have adjustable sliders for active control of the frequency occurred.
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