Well depending on the tonal formalization of it at least how I would pronounce it would probably be very similar to huh just a non-guttural version of it that m

Well depending on the tonal formalization of it at least how I would pronounce it would probably be very similar to huh just a non-guttural version of it that may have evolved because the language itself is non-guttural. The question really is if a non-English or any second language speaker of your language understand “huh” as in not the word but the grunt, my bet would be yes.