WaveNet is a deep generative model for producing raw audio waveforms. This breakthrough technology has been introduced (https://deepmind.com/blog/wavenet-generative-model-raw-audio/) by Google DeepMind(https://deepmind.com/) for teaching how to speak to computers. The results are truly impressive and online you can find examples of synthetic voices where the computer learns how to talk with the voice of celebrities, such as Matt Damon.
So, you might wonder why learning to synthesize audio is so difficult. Well, each digital sound we hear is based on 16,000 samples per second (sometimes 48,000 or more) and building a predictive model where we learn to reproduce a sample based on all the previous ones is a very difficult challenge. Nevertheless, there are experiments showing that WaveNet has improved the current state...