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Top Definition. dog whistle. Dog whistle is a type of strategy of communication that sends a message that the general population will take a certain meaning from, but a certain group that is in the know will take away the secret, intended message. Often involves code words.
As the name implies, a silent dog whistle is capable of producing sounds at higher frequencies than those perceptible by humans, but well within the dog's range. You can blow through a silent dog whistle and hear the air blowing through it, but often without hearing a sound.However, a dog training whistle may also emit frequencies as low as 16,000 Hertz which are audible by humans.ow to Train a Dog to Respond to a Whistle. The different tones produced by the silent dog whistle will basically become cues just as with verbal commands or hand signals. A dog who has mastered verbal commands or hand signals can be switched over to whistle commands with the proper training.