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Ring alarm of Decibel / Ring alarm of Decibel

Ring alarm of Decibel

On hearing impaired parents are so connected only with the child more time to raise a child than ordinary women.
The child was crying when the signal through the ring sensor and the ability to have their own time


Jeju national university

Jeju national university
Jejucity, South Korea

Ji-eun Baek,
Jeju national university