0:07
Schoolkids puffing air and stomping.
0:01
Mallet hitting air vent - low pitch.
0:01
Mallet hitting air vent - high pitch.
0:16
Air compressor, motor hum - medium close distant.
0:44
Rapid transit train, Toronto - fan vent, narrow.
0:23
Rapid transit train, Toronto - fan vent, full
0:04
Air freshener - aerosol spray, medium length.
0:03
Space doors closing - hydraulic.
0:03
Space doors closing - hydraulic.
0:05
Bicycle pump operation - moderate pumps. (7)
0:09
Bicycle pump operation - slow pumps.
0:03
Bicycle pump operation - moderate pumps. (6)
0:05
Bicycle pump operation - moderate pumps. (5)
0:03
Bicycle pump operation - moderate pumps. (4)
0:03
Bicycle pump operation - moderate pumps. (3)
0:03
Bicycle pump operation - moderate pumps. (2)
0:02
Bicycle pump operation - fast pumps.
0:06
Bicycle pump operation - moderate pumps. (1)
0:12
Passenger jet interior loop - air hum. (2)
0:20
Passenger jet interior loop - air hum. (1)