Kulsmash writes: "I am hoping to find someone that knows of software that will turn an old pair of headphones with a microphone into a pair of active noise canceling headphones. Bose and other companies have headphones that use a microphone to detect noise and then filter it out somehow. My logic is that if a regular pair of headphones has a microphone, isn't it possible to run a piece of software that would detect the background noise and essentially do what Bose does but on the cheap. Thanks in advance to anyone that know more."
"Card readers? We don't need no stinking card readers."
-- Peter da Silva (at the National Academy of Sciencies, 1965, in a
particularly vivid fantasy)