Noise is anything that corrupts the integrity of a message. A message comes over the radio. Atmospheric conditions produce noise or faulty equipment causes interference, resulting in static. The message is corrupted. A message comes to us from the printed page. Mistakes, errors, typos, poor printing - all make it difficult for a reader to obtain the message as it was intended. It is corrupted. A message comes over the television. The wind blows very hard, the tube is wearing out, or the signal is poor - all of these produce a poor image, so that the picture received is corrupted.

All three types of interference are from outside. They are noises or produce kinds of noises. The message as meant at its source - its integrity - is corrupted, so the receiver cannot reproduce it faithfully. Noi…