Ceaseless fusillades of noise is a feature of today’s battles. It comes from the thunder of helicopter rotors, the guttural remorselessness of machine guns, and the crushing howl of artillery. But now, Chandan Kumar Jha, a post-doctoral fellow at IIT-Gandhinagar, has sought to give freedom to Indian soldiers to communicate clearly with their team members even in war zones, pounding with the reverberations of conflict. He has created a microphone thinner than a hair and an accompanying device the size of a phone that cuts out ambient distractions and allows clear communication.