First of all, I want to say that this is my first post (wee!) and sorry if you notice any mistake in my writing, I’m spanish.
So, my question is: is there any possibility of changing a vowel sound into another? More specifically, I want to change the sound /a/ (like in bad) into /ɛ/ (like in bed). My intention is to change the lyrics in a song. I tried to just delete the syllable and copy a syllable with the sound /a/ from the same song, from another song and even recording my voice. However, the cut is noticeable. My hope is to achieve the desired vowel by adding some effects: that way the song will be remain as similar as possible (compared to adding the /a/ with a fragment from another file).
Any suggestion is very welcome! Thanks in advance!