The French pronunciation of René is, of course, quite distinctly different from the German pronunciation of the word. To hear the query word pronounced in Yandex, the Russian word for 'German' in the translator's input/output windows is " NEMEЦКИЙ ", and the Russian word for 'French' is " фРАНЦУЗCКИЙ ".
So at least in upper class society, French and French pronunciation was much more part of daily life for German native speakers than today. And this makes me believe, that at least among scholarly persons the french pronunciation of Dirichlet was standard in mid-19th century Germany.
The original calculator was invented in the 17th century by a Frenchman called Blaise Pascal! He was just 18 years old, and wanted to help his father do his tax calculations.
pronunciation - How do you pronounce 'René', a German male given name ...
This is also the pronunciation that learners of German as a foreign language should prefer (except they live in a German speaking area south of this line). the real southern pronunciation with [ig] South of the geographic line mentioned above, including whole Switzerland and Austria, people don't use [iç] for »-ich« at the end of a word.
pronunciation - How to pronounce the g at the end of König or Leipzig ...
pronunciation - W → V, V → F. Why do German speakers wrongly transpose ...
The pronunciation of Grüß dich on that site is decent but doesn't sound like a native speaker's. The r is rolled in a way that doesn't sound German. The ü is ever so slightly off (possibly something about length or intonation). The i sounds a bit too schwa- or e-like. And the ch, while definitely recognisable, has a tendency towards sch.