Developed by NVIDIA and the American Society for Deaf Children, a new AI-driven website known as Signs invites people to learn how to sign.

It was disorienting: Class time was strictly “voices off,” to encourage immersive learning and to show respect to the teachers at the Sign Language Center, who are all deaf.

American Sign Language (ASL) has long enabled real-time conversations for English-speaking people who are deaf and hard-of-hearing. But discussions often face significant lags when one or more ...