0:02
Please enable Javscript
Mobile phone SMS alert - 2X double beeps
Please enable Javscript
0:01
Please enable Javscript
Morse code, end message
Please enable Javscript
1:00
Please enable Javscript
German train ride with PA announcement
Please enable Javscript
0:10
Please enable Javscript
2 short beeps for end of message reached on tape answering machine. Button clunk
Please enable Javscript
1:01
Please enable Javscript
Fax machine rings once then transmission receiving with paper feed, end of transmission beep, machine hum
Please enable Javscript
0:02
Please enable Javscript
Alien transmission burst
Please enable Javscript
0:01
Please enable Javscript
Alien transmission burst
Please enable Javscript
0:02
Please enable Javscript
Alien transmission burst
Please enable Javscript
0:01
Please enable Javscript
Alien transmission burst
Please enable Javscript
0:02
Please enable Javscript
Morse code, end sentence
Please enable Javscript