An audience will never hear your voice the way you do. The sound you hear when you sing or speak is a mixture of inner and outer hearing. Sound is vibration. These vibrations can travel through solid objects, liquids and air.
This means that when you hear your voice you are not only hearing the sound travelling from your vocal cords to your ears via the air (i.e. the ‘outer route’ or ‘outer hearing’), but you are also hearing the sound travelling to your ears via the bones in the skull (i.e. the ‘inner route’ or ‘inner hearing’). This inner route is called ‘bone conduction’.