Thank you for the license warning, Karen. The github page links e.g.:
https://bluegrasspals.com/pipermail/dectalk/2020-June/005253.html
https://bluegrasspals.com/pipermail/dectalk/2015-October/004517.html
So it is probably not a good idea to use Dectalk as Linux synth.
Which brings us back to the Dectalk USB. Luckily, it also has RS232.
For DOS, I would recommend to use the RS232 connector and RS232 mode.
If that PC has no RS232, the next choice are USB to serial cables.
Which you may use with generic DOS USB serial drivers, or emulators.
If RS232 mode of the Dectalk USB is not satisfactory, USB mode exists.
I wonder if you can use DOS software for RS232 based Dectalk Express
with Dectalk USB in USB mode once you install a generic driver for USB
serial bridges. Or by using an emulator in which the entire DOS runs.
Given that I do not know the answer for that, I would say the other two
ways to use the device with DOS are more fool-proof than pure USB mode.
There is no existing screen reader in Linux that is fully
comparative to DOS programs.
When I checked years ago, BRLTTY helped with braille screen access:
https://brltty.app/
https://github.com/brltty/brltty
It also supports some speech synths: Alva Delphi, Blazie BrailleLite,
Elan Televox, IBM ViaVoice, Tieman CombiBraille and University of
Edinburgh Festival.
So while not being a pure screen reader, it may still be useful.
The default screen reader for the Linux Gnome GUI apparently still is
Orca. I do not know whether it is considered a comfortable option:
https://orca.gnome.org/
There also is Voxin, but I have never heard of that before:
https://voxin.oralux.net/
it seems to be related to Emacspeak, Fenrir, Orca, etc.
Regards, Eric
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