This is not about Siri nor about HAL, etc…
Do you want to have your computer read you a text or a webpage?
Not completely automated but getting closer:
In OS X, open a text item (Safari & Chrome work, not Firefox) and select/highlight it.
Then “Control Click” that selection and choose Speech/Start Speaking.
To tweak this to your liking, go to System Preferences and open up Dictation and Speech. Alex and Vicki are the most natural sounding artificial voices. You select the speed under Speaking Rate.
In iOS, go to Settings/General/Accessibility and turn on Speak Selection. There you can choose the Dialects/Languages and the Speaking Rate.
Merci du tuyau!!!
Il faut que ça coule… Ça découle de soi!