0:06
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Fluorescent light on and off 1
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0:36
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Sci Fi hum with an industrial wind tone
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0:49
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Haunted male voice in a warped space humming a lullaby - strange, scary and unreal
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2:11
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Hi tech computers humming
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0:56
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60 watt incandescent light humming thin
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1:13
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Fluorescent lights buzzing and humming
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1:00
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60 watt incandescent light humming thin and harsh
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2:00
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Hi tech laboratory machines humming and pulsing
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2:00
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Large electrical generator high frequency hum
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0:26
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Microwave oven tone, ambience
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