@HW-Developer
OK, I don't want to discourage you, maybe you just want to play with it, I've said I have no knowledge. But maybe if that sort of thing was freely available from 2005 there are some more recent ones which might be better?

mkdir build_qtspeech pushd build_qtspeech /path/to/Qt/bin/qmake /path/to/qtspeech/ make make install popd

First thing, build and install the module. You can open the project in Qt Creator so you ensure you build it using the Qt version you're developing with.

Then you can take a look at the example provided, that should get you started.