Freight elevator, opening, closing doors, movement:
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Electrical appliance, The noise of the room
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Throw a backpack on the floor
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Flag flaps in the wind on a ship
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Shake the bag, throw it on the floor
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Time Machine
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Metronome
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Scanning goods at the supermarket checkout
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Bone fracture
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Robot heartbeat
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Removing bad words
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High-frequency squeak, hum
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The noise of the crowd in the floor, Church
★★★★★