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Hearing Aids devices helps people with hearing problems a lot. Wearing a hearing aid device is the easiest way to ditch the hearing problems. Hearing aids were first introduced in 17th century. Since then it has come a long way. In the early age they were very different from what they are now, even they were not called hearing aids. That time it was called Ear Trumpets . And there was no electronic parts in those devices. The first electronic hearing aid device was constructed after the invention of microphone and telephone in the 1870s and 1880s. The first electric hearing aid, called the Akouphone , was created by Miller Reese Hutchison in 1898. That time carbon transmitters were used to make the device portable. The first hearing aid with vacuum tube were introduced in 1920 by Naval Engineer Earl Hanson . This devices used telephone transmitter to turn speech into electric signals. Then comes the Transistor age . Vacuum tubes were replaced by them which made th...

Speech problem embarrasses us most while speak. People who are suffering from speech problem generally faces huge setback in communication at job , social gathering or in any places. This makes them unsocial. The numbers of such people is not small. For an example, around 7.5 million people in USA are having problem with their voice. This stat is just for one country. Now hope you can imagine what is the approximate number of people worldwide with some kind of speech problem. If these huge workforce stay idle or can’t use their full potential then we will face a huge amount of setback in our civilization progress. So how to solve these people’s speech problem? Who can help them? From this need to help these people a new profession has started: Speech Pathologist. Speech Pathologists provides therapy sessions to vocally challenged people. This includes voice exercises , talking , communication skills etc. First they will check the patient to determine the problem and ac...