That speech card seems to be the most unusual thing about the machine, maybe assistive technology for blind users? Impressive that it survived the capacitor exp

That speech card seems to be the most unusual thing about the machine, maybe assistive technology for blind users? Impressive that it survived the capacitor exploding. I wonder if there was some DOS driver already installed on the hard drive that allows "echo"ing text to a character device to make it say something - like he does at the end of this video, but unfortunately without an explanation of what the interface for that is. edit: the longer video has a short bit at the very end where you can see some kind of menu system is launched from AUTOEXEC.BAT, with speech output. But it just cuts off after that - I'm a bit disappointed, since everything else is pretty much standard hardware for the time, while this card and the software supporting it is certainly rare, maybe even unique!