Would these sound exactly the same?
Les filles se parlent. Les fils se parlent.
Would there be any difference in the pronunciation?
Fille is pronounced like /fij/ (feey)
Fils is pronounced like /fis/ (fees)
They are two distinct words so it doesn't matter.
It doesn't change anything because the two sentences would be different.
Les filles se parlent. /le.fij.sə.palʁ/
Les fils se parlent. /le.fis.sə.palʁ/
The male voice has a slight accent from Southern France. This is why I put the 'uh' part between brackets. It is a regional thing.
- North: lé fiy' z-a papa
- South: lé fiyeu z-a papa
(This time I use the value of the French letters to indicate the pronunciation, because English syllables only give a rough idea.)