Nagish (see here previously) enables hundreds of thousands of deaf and hard of hearing individuals to make phone calls. It converts text-to-speech and speech-to-text in real time. The idea came to Tomer Aharoni, a 33-year-old Israeli engineer, when he was a student at Columbia University.

https://www.jns.org/feature/us-israeli-startup-achieves-communication-breakthrough-for-the-deaf