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Damien Hatfield
11 September, 16:55
What Converts sound to a signal in a telephone
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Lance Taylor
11 September, 19:14
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The part you talk into, that converts the sound of your voice
into an electrical signal, is a tiny microphone.
- - The sound waves from your voice are ripples in the air.
- - In most microphones, there's a tiny coil of wire hanging
between the ends of a tiny magnet.
- - When the ripples in the air hit the little coil of wire, they
make it vibrate (wiggle) slightly.
- - When a coil of wire wiggles in the field of a magnet,
a current flows in the wire.
There's your electrical signal!
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