0:20
NASA transmission beep.
4:06
EMF buzzing magnetic field tone from an Xbox One X - data idle, run, power up and down - variety.
1:00
EMF buzzing magnetic field tone from a Sony PCM-D100 portable field recorder - digital display on and off 2.
1:21
EMF buzzing magnetic field tone from a Sony PCM-D100 portable field recorder - digital display on and off 1.
4:48
EMF buzzing magnetic field tone from a London underground train - power up and down - motor idle 4.
2:08
EMF buzzing magnetic field tone from a London underground train - power up and down - motor idle 3.
1:37
EMF buzzing magnetic field tone from a London underground train - power up and down - motor idle 2.
4:52
EMF buzzing magnetic field tone from a London passenger train - electromechanical intense power rumble - thin.
1:01
EMF buzzing magnetic field tone from a parking meter digital display - movement with Doppler passes.
2:20
EMF buzzing magnetic field tone from an Apple MacBook Pro - idle data processing with tension.
0:03
Toy walkie-talkie speaker feedback short 6.
0:01
Toy walkie-talkie speaker feedback short 5.
0:01
Toy walkie-talkie speaker noise crackling, short 5.