Sound of a small electric drill on battery. It is equipped with a concrete bit, and drills concrete. Two drill strokes each followed by a removal of the bit, then the machine is turned off. UCS Category: TOOLPowr. Duration: 00:41.
Noise of a wind turbine turning. The microphone is directed towards the pale ones. I am about 20 meters from the mast. UCS Category: MOTRTurb. Duration: 01:29.
Many frogs sing near a pond in the city center. Sound recording at 2 meters. Sound of a waterfall in the background. UCS Category: AMBSwmp. Duration: 02:29.
Electrical shock that emits a speaker when plugged into the same circuit as other equipment that turns and turns off. Hears back, very light breath of the speaker itself. UCS Category: ELECArc. Duration: 00:30.
The sound of the alarm of a metropolitan that will soon be closing its doors. These are 3 sawtooth waves, 315, 325 and 960 Hz. UCS Category: ALRMBuzr. Duration: 00:03.
