electronic mind
New Member
I heared once that there are some kind of Mic. that can catch the sound waves from someone who is talking in a distance of 10m or even more and by connecting the mic to a headphone you hear what that someone is saying .... is it applicable and if it is what is it called?? (Sonic Mic,, Directional Mic,....)
and does anyone knows a site that cntains a schematic or some info
and does anyone knows a site that cntains a schematic or some info