It wasn't till I heard a recording of my voice till I could hear how I sound to other people - in my own head that is. My brain filtered out the my preconceived sounds and took it back to the recording voice.
Everyone's voice is generated in the throat and voice box. But your own ears are linked to the throat, so they are getting "feedback" if you like from the throat area. Whereas you only hear outside sounds direct into your ear.
Your brain however has never heard your voice without the distortions caused by your throat and ear system, until you record your voice. It can then take out the distortion so you can hear your true voice.
This effect doesn't see to last long if you are not listening to your voice by ear only. Perhaps the part of the brain dealing it gets fed up of the processing of the voice and reverts it back to what it is used to.
The ear has to be linked to the back of the throat due to pressure of going up an down hills. The ear drum bends with the pressure and so doesn't work well, till air is taken in at the back and bends the drum back. Hence why your ears pop going up and down hills!
The tube connecting the throat and ears also can get blocked when you have a cold, which is why your ears go odd during colds and flue.
Education for anyone aged 12 to 16 has made a mess of the world!