Dog-Whistle
Meaning: A description by political commentators of announcements by political leaders intended to alert subordinates and allies to themes and policies that are about to be emphasized or publicized, without simultaneously alerting political opponents or members of the media .
Origins & History: The dog-whistle, which was invented by Sir Francis Galton (1822-1911), typically emits sound between 16,000 and 22,000 Hertz — of which only the range 16,000 – 20,000 Hertz is audible to the human ear in children up to about the age of 11. After the age of 11, the range of human hearing decreases rapidly, and by middle age the top of the range is usually about 14,000 Hertz.
*From the book Dog the Wag by Mike Darton
