Figure 1 (hearing aid)
If people wear hearing aids then they must have a problem with their ears, and the one major dis-advantage that led people using hearing aids is deafness, now people may ask what deafness is. Well it is a disease that might hit you when new babies are born, or sometimes when you here a loud sound like an explosion that’s in front of you, furthermore, if deafness hits you it might be either mild, moderate or sometimes profound; it can effect either one ear or two ears, and if people lose their hearing ability they would have a really tough time with conversational speeches and low or loud sounds.
Deafness has many types; for example: the number one most common deafness type is conductive deafness, it means that sound waves cannot pass through the middle ear and the inner ear then to the cochlea through…