An article for babies is provided, which makes an infant feel more comfortable by delivering the babies the bio-signal which is familiar to the babies. An article(100) for babies comprises: a sensor(110) sensing at least one kind of bio-signal; a signal processing unit(120) which produces one or more driving signal by using the sensed bio-signal; a motor responding to one or more driving signal; and a driving part(130) which runs at least one among speaker and vibration plate. Bio-signal includes at least one among the pulse signal, respiratory signal, and electroencephalogram, and heart sound signal.
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