So I have been wondering for a while now how do you pronounce taeyoon and tae-eun. Are the...

With taeyoon its with a y sound, but with 'eun' its a mouth syllable like un

I think its like tae-yun and tae-eun the eun sound like en

I don't know how to explain the pronunciation but it sounds really similar but its not the same, you can put each name on the translator and listen how they sound its 태윤 and 태은... hope this help you(⌒▽⌒)

Thanks I'll try this