One of the most active lines of research currently in text-to-speech conversion is expressive speech generation, a general term that includes issues such as emotionally generated speech generation or speech generation in specific environments (telephone services, dialogues, etc.).
The generation of expressive speech has been one of the objectives of the I3Media project, of Barcelona Media, in which I have participated. automated telephone support.
Also in this line I co-directed the thesis of Yesika Laplaza, which aims to generate synthetic speech in chat environments.