The ability of the brain to pick out one conversation from many going on simultaneously.
"I just got the cd today. It sounds great. It is much cleaner than the original lp. I also have the original cassette. The cd has far greater dynamic range and frequency range, but without the tape noise or print through. While I would prefer a disk made from a digital master (N/A) or studio source tape ( who knows where THAT is ), I am VERY ..."