19-YO Invents 'Mask Mikes' That Amplify Voice Safely; Helps 50 Frontline WorkersKeralaBy Roshini Muthukumar18 May 2021 16:01 ISTKevin Jacob, a first-year engineering student from Thrissur, Kerala, has come up with his own mask that has an in-built speaker and amplifier, which he made using a 3D-printer he innovated in class 8.Read More
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