Assertion: dog whistle | /r/HasProperty | available
Facets:
value: across a spectrum of ultrasonic frequencies
type: OTHER
Source sentences:
text: In light of Galton’s early discoveries that no single pitch provokes the same response in every creature, even contemporary silent dog whistles tend to be adjustable or available across a spectrum of ultrasonic frequencies.
text: Whilst silent dog whistles are available, I don’t recommend using them in training as you are unable to hear what your dog is hearing and therefore can’t judge whether your signal is consistant or in fact working at all.