A binaural recording system re-creates the way a person actually hears by placing 2 microphones at a distance of about 7" (roughly the distance between your ears), usually mounted on a dummy head or worn on the human recorder’s head. When played back on headphones, the binaural stereoeffect is preserved and is often quite remarkable in its realism. With some easy modifications, a pair of headphones can be turned into a binaural microphone with readily available materials and cheap parts. Better yet, I’ll show you how to make your own binaural mic, disguised as earbuds. In today’s iPod-saturated urban environment, no one ever notices someone wearing headphones. This makes earbuds an ideal prop for covering a hidden mic that’s plugged into a recording device, for various stealthy endeavors.