Picture yourself with a friend in a crowded restaurant. The din of other diners, the clattering of dishes, the muffled notes of background music, the voice of your friend, not to mention your own – all compete for your brain’s attention. For many people, the brain can automatically distinguish the noises, identifying the sources and recognizing what they “say” and mean thanks to, among other features of sound, pitch. But for someone who wears a cochlear implant, a…
