Throat cancer, stroke and paralysis can rob people’s voices and strip away their ability to speak. Now, researchers have developed a decoder that translates brain activity into a synthetic voice. The new technology is a significant step toward restoring lost speech.

“We want to create technologies that can reproduce speech directly from human brain activity,” Edward Chang, a neurosurgeon at the University of California San Francisco, who led the new research, said in a press briefing. “Th