Document how to switch batch to default speed dispatcher voices

[C-Loftus]

Thank you for the work on this tool. I find it very useful for use with the Orca screen reader.

As one question, I am confused on how to use normal speech dispatcher voices that are preinstalled on Linux while also being able to keep the piper voices installed. In Orca it only shows up as having piper and spd-say on the cli also just shows piper. I would like to be able to switch back to espeak voices quickly.

I don't find that uninstalling voices in pied fixes this. The only other documentation I have seen online suggests maybe changing values in the speech dispatcher .conf file but I would prefer not to be editing text files if possible.

host@computer ~ [1]> spd-say --list-synthesis-voices 
                     NAME                 LANGUAGE                  VARIANT
                    Piper                    en_US                    MALE1

[C-Loftus]

Still a bit unsure but wondering if this might be related to the fact that speech dispatcher has both a config at /etc/speech-dispatcher and ~/.config/speech-dispatcher. Perhaps there is a conflict if the packages are installed via the system package manager to /etc/ and are not used if other voices are installed for a specific user (i.e. in this case piper with pied). Not sure