It may have been the worst speech synthesis since, well, the VoTrax (circa 1987), but it sounded beautiful because this room full of blind students had coded their BBC Microbits themselves to produce that "Hello!”
It was all part of our two-day camp with Cyber.org's Project Access on coding/robotics here at the Colorado Center for the Blind. We had ten participants - a mix of middle and high school students and our younger Independence Training Program (ITP) students.