Ilang months ang baby bago magbaby talk?

Karamihan ng babies nagsisimula ng babbling around 4-6 months, tapos around 8-12 months na sila tumutugtog ng mga sounds like "mama" or "dada", though hindi pa talaga nila alam ang meaning, kumbaga practice lang hehe! One of my mum friends said her daughter was super quiet until 10 months, tapos biglang explosive ang pag-usap, so bawat baby talaga ang pace nila.