Why is there no sound?

For learning a sign language, you don't need any sound. At Lingvano we want to put the visual component of sign languages first. Therefore, we intentionally decided not to include any audio features. 

This way, you can dive into the Deaf World even deeper, since your training is solely based on visual features! This will lead to faster recognition of Sign Languages and, moreover, their specific hand movements as well as facial expressions.