Device for generating, recording and reproducing brain wave sound and fetal vital sound for a woman and her fetus

摘要

Disclosed is an antenatal training device for a pregnant woman comprising: a fetal vital sound generating unit for collecting and outputting a signal representative of a fetal vital sound generated to correspond to the detected heartbeats and movement of a fetus; and a brain wave sound generating unit connected to the fetal vital sound generating unit, for generating a brain wave frequency signal generated in the most stable and comfortable state of the body and mind among various brain waves of the human body, modulating it with an audio frequency signal, mixing the modulated brain wave sound signal and the fetal vital sound signal, and amplifying the mixed brain wave sound and fetal vital sound signals for application to an audio output part, thereby allowing a user to hear them which in turn induces the user to a psychologically serene state or a relaxing state. This device has assistant antenatal training effects in that while a pregnant woman is hearing the brain wave sound such as an alpha () wave along with the fetal vital sound, she can be induced into a psychologically serene state or a relaxing state promoting the growth of a fetus while causing an emotional stability of a fetus.