Sine wave (975Hz):
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The fall
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Throw it on the floor, Shake the bag
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In the school corridor, sounds of, voices
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Walking big robot
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Electronic bird singing
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Energy surge, surge
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Squatting the Mat (1.5 seconds)
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The robot moves, makes sounds
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The receptionist trolley passes by
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Opening, Freight elevator, closing doors,
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Flag flapping in the wind
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Scanning goods at the supermarket checkout
★★★★★