i have wondered for sometime if you place a microphone in front of a speaker and then made a noise for the microphone to pick up and send it down a wire to the speaker when the speaker played the sound you had just made would the microphone pick it up and send it down again for the speaker to play it again if it does would that mean that you have a noise that will last forever due to it being in a loop?
2007-09-21 12:05:44 · 4 answers · asked by Agent Zero® 5 in Science & Mathematics ➔ Other - Science
i wouldnt mind seeing the tv theory in action!
2007-09-21 12:20:02 · update #1
It's called "feedback", and it will last forever or until (a) the system runs out of power or (b) the amplifier blows itself up due to the signal being amplified every time it goes through the loop. It can be even weirder with a tv screen connected to a video camera.
2007-09-21 12:17:49 · answer #1 · answered by Darren R 5 · 0⤊ 0⤋
You should ring the local radio station and ask them. Go live on air whilst listening to the station and you will be very popular...not.
2007-09-21 19:12:42 · answer #2 · answered by hucknallite 2 · 0⤊ 0⤋
yes, it's feedback. ever been in the school auditorium and hear that nasty squeal when the principle first starts to talk? There you go.
2007-09-21 19:19:48 · answer #3 · answered by Piglet O 6 · 0⤊ 0⤋
thats called feedback, you hear it when the sound guy is rubbish.
video for you to view
http://uk.youtube.com/watch?v=1zNQSc6ioWk
2007-09-21 19:25:56 · answer #4 · answered by wonderingstar 6 · 0⤊ 0⤋