Dog whistle
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v1.3 di hanoo.org
Su Dog whistle
★ A dog whistle (also known as silent whistle or Galton's whistle) is a type of whistle that emits sound in the ultrasonic range, which people cannot hear but other animals can, including dogs and domestic cats, and is used in their training. It was invented in 1876 by Francis Galton and is mentioned in his book Inquiries into Human Faculty and its Development, in which he describes experiments to test the range of frequencies that could be heard by various animals, such as a house cat.
★ The advantage of the dog whistle is that it doesn't produce a loud irritating noise for humans that a normal whistle would produce, so it can be used to train or command animals without disturbing nearby people.
★ Trainers may use the whistle simply to gather a dog's attention.
★ The advantage of the dog whistle is that it doesn't produce a loud irritating noise for humans that a normal whistle would produce, so it can be used to train or command animals without disturbing nearby people.
★ Trainers may use the whistle simply to gather a dog's attention.
Leggi di Più
Caratteristiche Dog whistle
Versioni Precedenti
Altro
Requires Android: Android 2.2+
Screen DPI: 120-320dpi
SHA1: 174166171f66f31ca9e65e43db1fa110cdc5a875
Size: 402.75 KB
Maggiori Informazioni
Nome Pacchetto:
Data Aggiornamento:
2013-09-10
Ultima Versione:
1.3
Aggiornamento Necessario:
Requisiti:
Android 2.2+
Rapporto:
Sicuro da Scaricare
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