At the age of 45, Casey Harrell lost his voice to amyotrophic lateral sclerosis (ALS). Also called Lou Gehrig’s disease, the disorder eats away at muscle-controlling nerves in the brain and spinal ...

Unlike other interfaces—which sound stiff and robotic, like early smart assistants—this one imitates the sound and cadence of real human speech. Share on Facebook (opens in a new window) Share on X ...