I found out recently that the human body can produce minute audio. An eyeball moving, an eye blinking, gastric sounds, a full bladder, subvocalizations, heart beat, all these create sound, however minute. What kind of microphone can pick these sounds up, and, more importantly, does the microphone have to be in contact with the human body to hear these things (I know NASA is using microphones sensitive enough so that their crew can communicate commands via subvocalizations. These microphones are attached to the neck, I beleive)?
- posted
19 years ago