I know quite a bit about sonic phenomena. But I'll need a lot more information as to what exactly is WRONG with your voice before I can answer your question. There are a lot of reasons why someone may have an ugly voice.
Is your voice too high/low?
NO
Too deep?
NO
Inconsistent range/sound?
YES
Raspy voice?
YES
Vibrations/oscillations?
YES
Do you have speech impediments or problems forming phonetics?
YES
Do you have difficulty when talking loud or soft (particularly when whispering)
NOT SO MUCH WHEN WHISPERING THAT I know of but when talking really loud do you want to talk to me on the phone to hear my voice? to see how bad it sounds if so send me a message to my inbox and i will give you my phone number