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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 ...
The first modern device for air acoustic use was created in 1998, [1] and is now known by the trademark name "Audio Spotlight", a term first coined in 1983 by the Japanese researchers [2] who abandoned the technology as infeasible in the mid-1980s.
A curvilinear array ultrasonic transducer for use in medical ultrasonography Inside construction of a Philips C5-2 128 element curved array ultrasound sensor. Ultrasonic transducers and ultrasonic sensors are devices that generate or sense ultrasound energy. They can be divided into three broad categories: transmitters, receivers and transceivers.
A typical shock collar. Shock collar used on a riot police dog in 2004 in Würzburg.Two years later, [1] Germany banned the use of shock collars, even by police. [2]A shock collar or remote training collar, also known as an e-collar, Ecollar, or electronic collar, is a type of training collar that delivers shocks to the neck of a dog [3] to change behavior.
She published several books on dog training. Graeme Sims, author of The Dog Whisperer; Bernard Waters, dog trainer and author about sporting dogs; Barbara Woodhouse was a dog breeder and trainer in England, known for her philosophy "There are no bad dogs, just inexperienced owners." She authored several books on dog training, and hosted a 1980s ...
An electromagnetic acoustic transducer (EMAT), is a type of non-contact ultrasound that generates an ultrasonic pulse which reflects off the sample and induces an electric current in the receiver. This is interpreted by software and provides clues about the internal structure of the sample such as cracks or faults.
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