High Quality Content by WIKIPEDIA articles! The first hearing aid was created in the 17th century. The movement toward modern hearing aids began with the creation of the telephone, and the first electric hearing aid was created in 1898. By 1996, the digital hearing aid was distributed to the public commercially. Some of the first hearing aids were external hearing aids. External hearing aids directed sounds in front of the ear and blocked all other noises. The apparatuses would fit behind or in the ear. As technology grew, both militarily and internally, the hearing aid became more advanced. The creation of carbon microphones, transmitters, digital signal processing chip or DSP, and the development of computer technology helped transform the hearing aid from the cupped hand to its present form. Данное издание представляет собой компиляцию сведений, находящихся в свободном доступе в среде Интернет в целом, и в информационном сетевом ресурсе "Википедия" в частности. Собранная по...

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