Life gets noisier every day. Very few people can be free from noise of some sort or another. It doesn’t matter where you live, in the middle of a modern city, or a faraway village--- the chances are that you’ll be disturbed by jet aeroplanes, transistor radios, powered engines, etc. We seem to be getting used to noise, too. Some people feel quite lonely without background music while they’re working. Scientific tests have shown that total silence can be a very frightening experience for a human being. However, some people enjoy listening to pop music which is very loud and this can do ha