Computer turning on, off, humming fan:
-
Windows notification sound
-
Electronic melody for SMS alerts
-
SMS notification sound
-
Clothes dryer
-
Hissing old tv
-
Air conditioning (outdoor unit)
-
Whatsapp notification sound
-
Exhaust fan
-
Fan blade rotation, air cut
-
Air conditioning, off, on
-
Vibration noise, Faulty air conditioning
-
Spin, Hard disk, read
★★★★★