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In addition to lung-powered whistles, there are also electronic dog whistle devices that emit ultrasonic sound via piezoelectric emitters. [3] The electronic variety are sometimes coupled with bark-detection circuits in an effort to curb barking behaviour. This kind of whistle can also be used to determine the hearing range for people and for ...
Dog barking is distinct from wolf barking. Wolf barks represent only 2.4% of all wolf vocalizations, in warning, defense, and protest. [4] [5] In contrast, dogs bark in many social situations, with acoustic communication in dogs being described as hypertrophic. [6] While wolf barks tend to be brief and isolated, dog barking is often repetitive. [7]
Acoustic harassment and acoustic deterrents are technologies used to keep animals [1] and in some cases humans away from an area. Applications of the technology are used to keep marine mammals away from aquaculture facilities and to keep birds away from certain areas (for instance in the vicinity of airports and blueberry fields).
A dog whistle, which emits sound in the ultrasonic range, used to train dogs and other animals. Bats use a variety of ultrasonic ranging (echolocation) techniques to detect their prey. They can detect frequencies beyond 100 kHz, possibly up to 200 kHz. [16]
The devocalization procedure does not take away a dog's ability to bark. Dogs will normally bark just as much as before the procedure. After the procedure, the sound will be softer, typically about half as loud as before, or less, and it is not as sharp or piercing. [3] Most devocalized dogs have a subdued "husky" bark, audible up to 20 metres. [4]
Electronic pest control is the name given to any of several types of electrically powered devices designed to repel or eliminate pests, usually rodents or insects. Since these devices are not regulated under the Federal Insecticide, Fungicide, and Rodenticide Act in the United States, the EPA does not require the same kind of efficacy testing that it does for chemical pesticides.