This document discusses various applications of deep learning, including image processing, speech synthesis, sound generation, and video processing. It describes how generative adversarial networks (GANs) have been highly effective for image-to-image synthesis and style transfer. GANs have also shown promise for applications like steganography. The document also reviews recent work using deep learning for tasks like speech synthesis, generating sounds from videos, and video-to-video synthesis. Overall, the document provides examples of the power and versatility of deep learning across multiple domains.