New research may lead to hearing aids with the ability to select one voice among many

Scientists have developed an artificial hearing system that harnesses the brain's ability to amplify certain sounds while suppressing others. It could lead to better hearing aids. AILSA CHANG, HOST: For people with hearing aids or a cochlear implant, a crowded room can be really overwhelming. (CROSSTALK) CHANG: Lots of voices, but none of them distinct. NPR's Jon Hamilton reports on new research that could lead to hearing aids with the ability to select one voice among many. …