电影声音录制的发展及原理（Development and principles of film sound recording）.docVIP

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电影声音录制的发展及原理（Development and principles of film sound recording）.doc

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电影声音录制的发展及原理（Development and principles of film sound recording）

电影声音录制的发展及原理（Development and principles of film sound recording） By Kodak RonUhlig staff will be two -, two channel stereo success for 16mm film encouragement, Kolby labs invented the track stereo variable area system has a complete compatibility. The theater will track you can enjoy the Dolby decoding with low noise and a wide frequency range of the stereo reproduction, when playing standard mono copies can also hear the sound satisfactory. Similarly, Dolby encoded stereo copies can also produce acceptable mono effects on non decoded projectors on stereophonic theaters. In 1974, two films with Dolby stereo variable area (SVA) - issued 1976, four; film was released; by 1978, is 25 part. As of 1979, more than 900 theaters around the world to reproduce the Dolby encoding conversion equipment SVA track. At that time, the installation of DolbySVA 4 - CinemaScope (wide screen film) 6 - or 70mm copy broadcast stereo equipment theater to spend US$10000 to $15000, the only mono theater, the cost increased to 25000 to US$15000. All theaters are attracted by the Dolby stereo system, but for many theaters that have invested in Dolby, it has proved worthwhile. Other competitors include Colortek, Todd-AO/Nuoptix, Universal and Sensurround, twentieth Century Fuchs company and its Foxsound360 and the Pacific theater with their bilingual car Theatre (ball) star wars. 1980s After all the development, there are three ways to experience the test of time: Optical track 35mm tone or Academy - - standard mode since 1927. These are symmetric or symmetric double variable area track, AcademyofMotionPictureArtsandSciences) a group on standardization efforts. 35mm stereo optical track, with Dolby noise attenuation -- now the most common 35mm format, Dolby call them SVA or stereo variable area track. 70mm -- special magnetic soundtrack for theater provides wide screen image and sound quality specifications. The film is shot in 65mm or 35mm, and is eventually released as a 70mm copy. The width