This application lets you create an audio book using Google TTS API. The application will generate mp3 file for each paragraph and then merge them together. Introduction This application lets you create an audio book using Google Text-to-Speech AI API. The application will generate mp3 file for each paragraph and then merge them together. The Google Text-to-Speech AI is $16 per 1 million characters. First 1 million characters FREE. An average 200 page audiobook is about 0.2 million characters.