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