section_path: History/Sound
section_name: Sound
paragraph_text: Sound
  
  In the 1920s, the development of electronic sound recording technologies made it practical to incorporate a soundtrack of speech, music and sound effects synchronized with the action on the screen. The resulting sound films were initially distinguished from the usual silent "moving pictures" or "movies" by calling them "talking pictures" or "talkies." The revolution they wrought was swift. By 1930, silent film was practically extinct in the US and already being referred to as "the old medium."
  
  The evolution of sound in cinema began with the idea of combining moving images with existing phonograph sound technology. Early sound-film systems, such as Thomas Edison's Kinetoscope and the Vitaphone used by Warner Bros., laid the groundwork for synchronized sound in film. The Vitaphone system, produced alongside Bell Telephone Company and Western Electric, faced initial resistance due to expensive equipping costs, but sound in cinema gained acceptance with movies like Don Juan (1926) and The Jazz Singer (1927).
  
  American film studios, while Europe standardized on Tobis-Klangfilm and Tri-Ergon systems. This new technology allowed for greater fluidity in film, giving rise to more complex and epic movies like King Kong (1933).
  
  As the television threat emerged in the 1940s and 1950s, the film industry needed to innovate to attract audiences. In terms of sound technology, this meant the development of surround sound and more sophisticated audio systems, such as Cinerama's seven-channel system. However, these advances required a large number of personnel to operate the equipment and maintain the sound experience in theaters.
  
  In 1966, Dolby Laboratories introduced the Dolby A noise reduction system, which became a standard in the recording industry and eliminated the hissing sound associated with earlier standardization efforts. Dolby Stereo, a revolutionary surround sound system, followed and allowed cinema designers to take acoustics into consideration when designing theaters. This innovation enabled audiences in smaller venues to enjoy comparable audio experiences to those in larger city theaters.
  
  Today, the future of sound in film remains uncertain, with potential influences from artificial intelligence, remastered audio, and personal viewing experiences shaping its development. However, it is clear that the evolution of sound in cinema has been marked by continuous innovation and a desire to create more immersive and engaging experiences for audiences.