Sine wave (975Hz):
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Passenger elevator, movement, stop
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Closing a cigarette case, Opening
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Boiling liquid, Chemistry, burner
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Electrical appliance, The noise of the room
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Pull telescopic antenna
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Tambourine
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Movement, Elevator with hand doors
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Unlock the bike lock
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Chemistry, Bunsen Burner
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Freight elevator, opening, closing doors,
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Male voice, numerical, Warning system
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The robot moves, makes sounds
★★★★★