High-frequency squeak, hum:
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Flag flapping in the wind
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Sounds R2D2
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Sine wave (975Hz)
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The receptionist trolley passes by
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Umbrella opening
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Popping bubbles, Air bubble film
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Squatting the Mat (0.5 seconds)
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Small crank rotation
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Twist the cap of the bicycle camera, Unscrew
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Item falls on concrete
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The noise of the room in the hangar for
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Movement, Passenger elevator, stop
★★★★★