Dolby Laboratories develops audio signal processing systems and manufactures professional equipment to implement these technologies in the motion picture, broadcasting, and music recording industries. Dolby also licenses these technologies for use in the consumer electronics industry. Providing the best possible audio for any entertainment environment, including music, movies, television and multimedia, is Dolby's primary commitment. Based in San Francisco with European headquarters in England, the privately held company has entertainment industry liaison offices in New York and Los Angeles and licensing liaison offices in Hong Kong, Shanghai, Beijing, and Tokyo. Dolby Laboratories, the worldwide leader in sound innovation, creates technologies that enhance the entertainment experience, making it richer, fuller, and more involving. For almost four decades, Dolby has been instrumental in defining high-quality audio and surround sound in cinema, broadcast, home audio systems, cars, DVDs, headphones, games, televisions, and personal computers.