Some variants of Bengali, particularly Chittagonian and Chakma Bengali, have contrastive tone; differences in the pitch of the speaker's voice can distinguish words.
Joissain bengalin varianteissa, erityisesti Chittagongin ja Chakman bengalissa, on toisistaan erottuvia tooneja, joissa sävelkulun erot puheessa voivat erottaa sanoja toisistaan.