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Deaf people are one of the vulnerable groups. They usually can't talk because their impairment of hearing makes them lose the opportunity to learn how to talk. So we have designed this product which can transform other people's voice into a special signal. After receiving the signal, the deaf can catch the words in a special way, so that they can learn to speak again.
Yudian Jin Qiyuan Jin Shuyi Wang Zhuoke Zheng