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Some dog whistles have adjustable sliders for active control of the frequency produced. Trainers may use the whistle simply to get a dog's attention or to inflict pain for the purpose of behaviour modification. In addition to lung-powered whistles, there are also electronic dog whistle devices that emit ultrasonic sound via piezoelectric ...
I found one book (The Dog, David Alderton) that says that dogs & humans hear down to about 20 Hz and that dog whistles around 30Hz are "virtually inaudible to the human ear"; another book (The New Dog Handbook, Hans-J. Ullman), says dogs hear 70Hz to 100Hz and that they can hear "soundless" dog whistles "in the supersonic range of about 30,000 ...
A trailing edge tone occurs when an exterior flow passes over a trailing edge. There is a whistle that is a combination of an edge tone and a trailing-edge tone and might be called a wake-edge tone. It occurs in rotating circular saws under idling conditions and may be called the circular-saw whistle. Under load conditions, blade vibration ...
For instance, the sociologist Barry Hindess criticized Josh Fear's and Robert E. Goodin's respective attempts to theorize dog-whistles on the grounds that they did not pass the Weberian test of value neutrality: "In the case of the concept of ‘dog-whistle politics,' we find that the investigator's—in this case, Fear's—disapproval enters ...
Joseph Hudson (1848–1930) was an inventor in Birmingham, England during the late 19th century and the founder of J Hudson & Co in 1870, later to become the world largest whistle manufacturer . Hudson entered a competition held by the Metropolitan police force in London in 1883 to design a better way of attracting people's attention.
This page was last edited on 22 January 2025, at 20:35 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
"A Very Silent Night" is a single released in New Zealand exclusively for dogs - created by creatives Colin Mitchell and Alex Dyer, now at rascals.co.nz. It is a world first [ dubious – discuss ] as the single can not be heard by human ears and can only be heard by animals that can hear outside of the normal human range - including dogs ...
The music video was put out on YouTube on June 25, 2015. The song was premiered on March 15, 2015 on YouTube on the account of nuca chitiashvili [ citation needed ] . The song features vocals from fellow American rappers J. Davis and Spooks, and was released as Stone's commercial debut single on June 17, 2016 by RCA Records . [ 1 ]