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Electromagnetic Noise from an AfterShokz OpenMove bluetooth headset picked up by a telephone pickup coil recorded with desktop PC and Goldwave. The magnets in the headset vibrate in response to my tapping on the headset and in combination with the coil they act like a microphone, even picking up my saying hello. Then I move the pickup coil over to the electronics section and you hear the digital whine it's making.
Type
Wave (.wav)
Duration
0:40.740
File size
3.4 MB
Sample rate
44100.0 Hz
Bit depth
16 bit
Channels
Mono