Μπ is pronounced is "b" in the beggining of a word and as "mb" or "b" in the middle of the word. So, μπαμπάς can be babas or bambas (the later is actually very rare, as it is a kids' word, so there are no "difficult" sounds).
Why not using beta？ βαμβας ? Plus, "αι" in greek is the same of "ai" in french as prounounciation ?
Thank you. Can u tell me please the pronounciation of all letters in all cases if this is possible. I know i am asking for a big thing but i hope you to answer me. Thanks in advance
In the second link, under Regular Palatalization, there is this paragraph:
Note, however, that the palatalization of the alveolar consonants [n] and [l] followed by [i] varies in degree among regions of Greece. Athenians palatalize them a little bit, whereas people in some villages of Peloponnesus palatalize them a lot (to the point that Athenians — who are silly enough to feel “people of the capital” — make fun of them).
I'd suggest you to never palatalize the [n] and [l] when followed by an [i] sound. The official is not to palatalize.