Question

What is Galton's whistle?

Answer 1

A dog whistle (also known as silentwhistle or Galton's whistle) is a type ofwhistle that emits sound in the ultrasonic range, which people cannot hear but some other animals can, including dogs and domestic cats, and is used in their training.

Answer 2

A whistle used for training or commanding dogs, especially one that emits sound of a frequency too high for most humans to hear.