1:45
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Vending machine ambience hum rattle
0:11
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Hum from neon sign fairly steady tone
0:27
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Interior noise of a refrigerator.
1:00
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60 cycle ac hum or buzz, electrical loop
2:05
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Guitar amplifier, hum loop
0:11
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Radio static and hum with frequency change
0:14
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Low frequency industrial hum
0:30
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Low pitched drone. Alarm.
1:11
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Sound design element: distant electronic hum
1:54
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Freezer hum and crackle