Electromagnetnic Microphone

This is a journey.. into sound… Electromagnetic sound!

These mics are sold as ‘telephone pick-up coil’ for about £5 in Maplin. It’s a small pick-up coil in black plastic moulding with rubber suction pad to attach to a telephone, designed to pick up conversations for recording. Kind of like old-school spy equipment..

Anything electronic or electrical will generate a magnetic field, and this baby will pick up that signal..


..and it goes a little something like this:

1. Library card reader
2. Lift
3. G4 Mac
4. iMac
5. Mobile phone
6. Photocopier
7. PC Laptop
8. TV
9. Payphone

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