The negative of music
March 7, 2011 7:51 AM Subscribe
What would you hear if you played the negative image of an LP?
I was talking to a friend this weekend about the few LPs we both still have. He mentioned that he had learned a surprising trick: molten wax can be used to clean the dust and microgrit off of them by putting a generous layer on, letting it dry, then popping the wax off with all the scuzz embedded in it (if you're trying this at home, he mentions you need a lot: a thin layer just crumbles and you do more damage picking off the individual remnants).
He further mentioned that when he removes the sheet of wax, he is left with the negative image of the LP, and wondered what would happen if he tried to play that on a turntable. Notwithstanding the question of whether or not the needle would just dig into the wax instead of riding along it, what would he hear? I suspect it would just be white noise: the stylus would be riding in a groove which is the negative of the ridge separating the grooves on the LP. He wonders if you might get some weird, out of phase, backwards ghost of the music through the noise. What does the hive mind think?