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robertogreco : megaphone   1

TidBITS iPhone iPad iPod: iOS Hearing Aids... or, How to Buy Superman’s Ears
"Use Megaphone with the normal iPhone earphones, and the mic pickup sits just below your chin; you’ll hear only sound that’s directed at you. But switch your iPhone earphones for the standard iPod earphones, which don’t have a mic, and now you’ll be using the rather sensitive omnidirectional microphone that’s built into the iPhone and fourth-generation iPod touch.<br />
I tried this out for the first time while standing outside of a Starbucks, and suddenly I could hear the footsteps of anyone walking by. Snatches of a conversation at a 20-foot distance. I heard a siren, and then was shocked to see an ambulance pass by three blocks away. Traffic and ambient noise are also amplified, of course, but our brains have had a quarter-million years to learn how to separate out important sound frequencies, and that, plus my lip-reading abilities, turned me into a rather powerful eavesdropper."
iphone  ios  hearing  eavesdropping  sound  trythis  perception  hearing-aids  megaphone  applications  microphones  classideas  via:britta 
march 2011 by robertogreco

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