  Reading text aloud is an important feature for modern computer applications.
It not only facilitates access to information for visually impaired people, but
is also a pleasant convenience for non-impaired users. In this article, the
state of the art of speech synthesis is presented separately for
mel-spectrogram generation and vocoders. It concludes with an overview of
available data sets for English and German with a discussion of the
transferability of the good speech synthesis results from English to German
language.
