“So, what exactly is Dolby? Actually, Dolby is the name of a company headquartered in the United States, officially called "Dolby Laboratories Inc." The company name, Dolby, comes from the founder, Ray Milton Dolby. "Laboratories" means "experimental laboratory" or "research institute" in Japanese. So, what kind of experiments and research does this company conduct? While they now also develop video technology "DOLBY VISION™" (Dolby Vision), Dolby Laboratories started as a group of audio experts, conducting audio-related research for over 50 years. Dolby has now become a technology company involved in all aspects of entertainment. In this book, we will explain the "audio technologies" that Dolby has brought to the world in a way that even audio experts and engineers can understand.” (From "About the Writing")