American sign language (ASL) is a visual language using hand gestures, facial expressions, and body movements, primarily used by the Deaf community in North America.

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 ...