Simalungun, or Batak Simalungun, is an Austronesian language of Sumatra. It is spoken mainly in Simalungun Regency and Pematang Siantar, North Sumatra, Indonesia.
/b, d/ can also have implosive allophones [ÃÂ, ÃÂ].
Sounds /i, u, ÃÂ, ÃÂ, a/ can have allophones [ê, ÃÂ, e, o, ÃÂ].