This standard specifies the position and maximum width of the sound track on 35mm variable-area mono-channel motion picture optical sound film. This standard applies to mono 35mm motion picture optical sound film. GB/T 4639-2000 Position and maximum width of the sound track on 35mm mono-channel motion picture optical sound film GB/T4639-2000 Standard download decompression password: www.bzxz.net
This standard specifies the position and maximum width of the sound track on 35mm variable-area mono-channel motion picture optical sound film. This standard applies to mono 35mm motion picture optical sound film.

ICS 37. 060. 20
National Standard of the People's Republic of China
GB/T 4639---2000
eqv IS0 70:1981
Cinematography-Monophonic 35 mm negativephotographic sound record on 35 mm motion-picturefilm --Position and maximum width 2000-10-17 Issued
2001-03-01 Implementation
State Administration of Quality and Technical Supervision Issued
GB/T4639-2000
This standard is a revision of GB/T-1639-1984 35mm motion picture optical soundtrack negative recording position and width dimensions based on [ISO70:1981 "Position and maximum width dimensions of soundtrack on monophonic 35mm motion picture optical soundtrack negative film"]. This standard is equivalent to ISO70:1981 in terms of technical content and writing rules. GB/T4639-1984 is formulated with reference to ISO70:1981. Considering that most films in China now use stereo sound, it is necessary to distinguish the standards used for monophonic and stereophonic optical sound films. With reference to IS(70:1981, the name of GB/T4639-1984 is changed to "35mm monophonic optical sound film track position and maximum width dimension". The parts of the original standard that were not rigorous enough are revised, for example, "the width dimension of the sound recording" is changed to "the maximum width dimension of the sound recording track". Considering that coded sound tracks are no longer used in China and abroad, the content related to coded sound tracks is deleted when revising the standard. This standard will replace GB/T1639-1984 from the date of its entry into force. This standard was issued by the State Administration of Radio, Film and Television. This standard is under the jurisdiction of the China Film Science and Technology Research Institute, and was drafted by the China Film Science and Technology Research Institute. Drafter of this standard: Sun Yanwei
This standard was first issued in 1984. This revision is the first revision. The China Film Science and Technology Research Institute is responsible for the interpretation of this standard. GB/T4639\u20142000
ISO Foreword
ISO() (International Organization for Standardization) is a world-wide joint organization of national standards associations (ISO member groups) of various countries. The formulation of various international standards is completed through ISO technical committees. Any member group that is interested in the topics authorized to be handled by the technical committee has the right to select representatives to participate in the technical committee. . Official and non-official international organizations in contact with ISO (International Organization for Standardization) may also participate in this work.
Any draft international standard adopted by the technical committee shall be circulated to the member bodies for comments before being approved as an international standard by the ISO committee.
International standard ISO70 was developed by IS()/TC36 Film Technical Committee. In accordance with item 5.10.1 of the first competition of the ISO technical work guidelines, the revised standard (second edition) has been delivered to the ISO committee, which cancels and replaces the first edition of the standard (ie TSO70: 1976). The standard has been reviewed and approved by the following national group members: Australia
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Republic of South Africa
No group member expressed opposition to the document. Former Soviet Union
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1 Scope
National Standard of the People's Republic of China
Position and maximum width dimensions of the sound track on 35mm monophonic optical sound film
Cincmatography-Monophonic 35mm Degativephotugraphic Sound record on 35 mm motion-picture soundtrack position and maximum width delay on 35 mm variable-area monophonic optical sound film GB/T 4639\u20142000
eqy 1s0 70:1981www.bzxz.net
Replaces GB/T 4639\u20141984
This standard specifies the position and maximum width delay of soundtrack on 35 mm variable-area monophonic optical sound film. This standard is applicable to monophonic 35 mm optical sound film.
Cited standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using the standards should explore the possibility of using the latest versions of the following standards. TS0 491:1998 Cinema - Cutting and perforation sizes for 35 mm1m films and magnetic films ISO 2939:1986 Cinema - Frames and optical soundtrack on 35 mm motion picture release prints - 3 Dimensions
- Position and dimensions
For the dimensions of the position and maximum width of the soundtrack on 35 mm monophonic motion picture optical sound film, see Figure 1 and Table 1 below: Table 1
Approved by the State Administration of Quality and Technical Supervision on October 17, 2000 Size
6.17+0.05
Implementation on March 1, 2001
GB/T 4639\u20142000
Reference edge
The film emulsion layer shown in Figure 1 faces away from the observer. 2
The People's Republic of China
National Standard
The position and maximum width of the sound track on the 35mm monophonic optical sound film
GB/T 4639\u20142000
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