An acoustically transparent filter, placed over a microphone to shield it from wind-induced vibration.
"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 ..."