ScriptVOX Studio is an excellent and complete voice synthesizer, specifically designed for writers and script-writers who want to test how their texts sound with certain types of voice. For this you can associate different voices to each text, and even add images to each text.
This way with ScriptVOX Studio you can listen to each character with a specific voice preselected by you. It has an unlimited number of voices, so you can associate as many texts to as many different voices as you like. You can even regulate and edit some voices to adapt them better to the tone you`re looking for.
To work correctly you need to previously install
NET Framework 3.5 or later.