A brain-controlled system may help listeners with hearing loss cut through the noise

Scientists say they've developed brain-decoding technology that could help people who use hearing assistance devices pick out one voice in a crowded room — a longstanding challenge for hearing aids. Matteo Farinella/Columbia University's Zuckerman Institute hide caption toggle caption Matteo Farinella/Columbia University's Zuckerman Institute Imagine a crowded room. It's a chaos of sound, teeming with indistinct voices. Scientists call this the cocktail party problem . …