According to Chaubey et al., "Austro-Asiatic speakers in India today are derived from dispersal from Southeast Asia, followed by extensive sex-specific admixture with local Indian populations."
ɐkˈoːɹdɪŋ tə tʃˈɔːbi ˈɛt ˈæl., "ˈɔːstɹoʊˌeɪʒɪˈæɾɪk spˈiːkɚz ɪn ˈɪndiə tədˈeɪ ɑːɹ dᵻɹˈaɪvd fɹʌm dɪspˈɜːsəl fɹʌm sˈaʊθiːst ˈeɪʒə, fˈɑːloʊd baɪ ɛkstˈɛnsɪv sˈɛksspəsˈɪfɪk ɐdmˈɪkstʃɚ wɪð lˈoʊkəl ˈɪndiən pˌɑːpjʊlˈeɪʃənz."