dai11y 23/11/2020

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This $1 hearing aid could treat millions with hearing loss

  • Saad Bhamla, a bioengineer from India, wanted to buy his grandparents some hearing aids. He was shocked to find that they can cost $500 to $5000 per pair, so set out to build his own. He soldered a microphone to a circuit board, then added an amplifier, a frequency filter and a volume control, as well as on/off switch and audio jack. His makeshift product, LoCHAid, passes five out of six of the World Health Organization’s recommendations for hearing aids, and cost around $15 to build. This could be reduced to $1 if produced at scale. It needs clinically testing before it can be legally sold as a hearing aid in most countries.

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