> Obviously you can't pronounce a sound that you don't even know exists.
It's possible that they could interpolate those sounds. For example, Bengali has a sound that's halfway between a 'd' and a 't'. Using some statistical heuristics, it's possible that they could approximate that letter using your pronunciations of 'd' and 't' (and knowing how bilingual Bengali-English speakers who pronounce 'd' and 't' similarly to how you do also pronounce that letter).
It's possible that they could interpolate those sounds. For example, Bengali has a sound that's halfway between a 'd' and a 't'. Using some statistical heuristics, it's possible that they could approximate that letter using your pronunciations of 'd' and 't' (and knowing how bilingual Bengali-English speakers who pronounce 'd' and 't' similarly to how you do also pronounce that letter).