| Optimizing Visual Feature Perception for an Automatic Wearable Speech Supplement in Face-to-Face Communication and Classroom Sit Recent countries visiting this post |  |
 | 4 | United States |
 | 1 | Russian Federation |
| Optimizing Visual Feature Perception for an Automatic Wearable Speech Supplement in Face-to-Face Communication and Classroom Sit Recent countries visiting this post | |
| 4 | United States |
| 1 | Russian Federation |