I don't know. An /i/ near a vowel in Spanish tends to become /j/. I usually see the consonant y transcribed as [ʝ]. Wikipedia on Spanish phonology notes the di

I don't know. An /i/ near a vowel in Spanish tends to become /j/. I usually see the consonant y transcribed as [ʝ]. Wikipedia on Spanish phonology notes the difference in pronunciation between viuda and ayuda which is an interesting contrast in two very similar sounding words. Old Spanish had a lot of phonological differences so I'm not sure you can do a straight comparison.