Rebecca Sohn is a freelance science writer. She writes about a variety of science, health and environmental topics, and is particularly interested in how science impacts people's lives. She has been an intern at CalMatters and STAT, as well as a science fellow at Mashable.
A new, flexible device that clings to the neck can translate muscular movements into speech, enabling people to talk without using their vocal cords.
Lead study author Jun Chen, an assistant professor of bioengineering at the University of California, Los Angeles, told Live Science that the idea for the patch arose after he'd spent several hours lecturing and felt his voice becoming tired. He began to imagine a way to solve this problem, to make it possible for a person to speak without using their vocal cords, also known as"vocal folds.
Now, in their latest study, the team has harnessed this material in a patch that responds to the subtle stress placed on it by the movement of throat muscles. When a person executes the movements needed to talk, the material responds by producing electrical signals that can be translated into speech.
In a demonstration of the tech involving eight people without speech problems, the algorithm was about 95% accurate at translating the patch's electrical impulses into speech. These tests were done using the same short phrases and sentences the algorithm was trained on, including"Merry Christmas" and"I hope your experiments are going well," which the individuals said while standing still, walking and running.
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