An origin somewhere on the African continent has broad scholarly support, and is seen as being well-supported by the linguistic data.
ɐn ˈɔːɹɪdʒˌɪn sˈʌmwɛɹ ɔnðɪ ˈæfɹɪkən kˈɑːntɪnənt hɐz bɹˈɔːd skˈɑːlɚli səpˈoːɹt, ænd ɪz sˈiːn æz bˌiːɪŋ wˈɛlsəpˈoːɹɾᵻd baɪ ðə lɪŋɡwˈɪstɪk dˈeɪɾə.