coppertoes asked: This is about the 242 post. One of my deaf 40 year old friends, finally got a cochlear hearing aid in order to hear the voices of his children. One day we were having lunch and I opened a can of soda. He went still and silent for a moment, while his eyes widened. "I have always wondered what sort of sound that makes, if any! Its one of the most amazing sounds." He now will ask people...