Yeah, I don’t really understand some of this.
I live in France, but mostly everything on my PC is in English.
When I lose Azure for some reason, I get the ATC and myself in French, with a terrible accent (normal, because it’s a French text-to-speech voice speaking English. The lady actually sounds the way a frenchwoman would speak in the nineteen-sixties… OK, sometimes even today 
).
But what I really don’t understand is that it’s using an extremely un-natural high-pitched voice, which makes it even more ridiculous.
I really have to figure out how I can change this.
Edit : fixed in Windows settings. Have a normal voice now in local mode.