Dog whistle. train your dog for Android

Dog whistle. train your dog app for android description: Use our dog whistle application to train your dogs.
It use different sonic sounds of high frequency (10 khz 20 khz)dogs can hear sound at higher frequencies than humans can.
A dog whistle exploits this by emitting a high frequency sound to call to a dog.
Many dog whistles emit sound in the upper audible range of humans but some such as the silent whistle emit ultrasound at a frequency in the range 18 22 khz.
1) best dog whistle2) timer3) run in background4) installed to sd card5) tips how to train dogs 6) ++++ some phone speakers are of poor quality.
They could not produce ultrasonic waves.
++++7) total dog whistle8) best whistle sound9) dog repellent10) best anti mosquito repellent11) dog games12) dog and puppies sounds13) anti dogs barking14) sounds to annoy dogs15) animal soundsthe frequency range of a dog whistle is largely out of the range of human hearing.
Human hearing is typically considered to be between 20 hz and 20 khz.
A dog whistle is within the range of 23 to 54 khz.
Some dog whistles have adjustable sliders for active control of the frequency produced.
Depending on the way the whistle is used a trainer may simply gather a dog 39 s attention or inflict pain for the purpose of behavior modification.