This standard specifies the lateral position and width dimensions of the two-track variable-area soundtrack on 35mm film copies and the related position and dimensions of the sound-reproducing optical blade. This standard applies to 35mm optical two-track film copies. GB/T 13999-1992 Position and width dimensions of optical two-track soundtrack on 35mm film copies GB/T13999-1992 Standard download decompression password: www.bzxz.net
This standard specifies the lateral position and width dimensions of the two-track variable-area soundtrack on 35mm film copies and the related position and dimensions of the sound-reproducing optical blade. This standard applies to 35mm optical two-track film copies.

National Standard of the People's Republic of China
Two-track photographic sound records on 35 mm motiqn-pictureprints-Positions and width dimensions GB/T13999--92
Not applicable Reference to International Standard ISO7343-1984 Positions and width dimensions of optical two-track photographic sound records on 35 mm motiqn-pictureprints 1 Subject Content and Scope of Application
This standard specifies the lateral positions and width dimensions of the effective-track variable-resolution soundtrack on 35 mm electronic copies and the related positional dimensions of the sound reproduction optical blade.
This standard applies to 35 mm optical two-track motion picture copies. 2 Reference standards
GB2926 Technical specifications for title and title tracks for 35mm and 16mm motion picture distribution films 3 Position and size
The position and size of the optical dual soundtrack on a 35mm motion picture copy are shown in Figure 1 and Table 1. State Technical Supervision Bureau 19921217 approval
1993-08-01 implementation
: com also sound optical blade
position and size requirements -
GB/T13999-92
From the above 1
male selection
Figure 135 mtl film copy optical double sound track position and size, F is the isolation distance between the two photocells (front gap) Table 1 www.bzxz.net
A (reference value
D (reference value)
[{maximum value]
t reference value]
Note: 1) Recording sound track negative film E is 6.17±0.05mm, 4 recording
6.04-+0.05
6. 29 ± 0. 05
6.17±0.10/
Height, Height 5
4. 1 The recording and reproduction images of soundtrack 1 and soundtrack 2 shall be aligned to a straight line 90°±5' with the film reference. 4.2 Figure 1* Soundtrack near the reference side Soundtrack 2 4.3 The interval between the two soundtracks on the film copy shall be opaque. tmm
5 Sound-image interval
CB/T13999-92
The sound interval shall comply with the relevant provisions of GB2926. 6 Use of soundtracks
The dual soundtracks specified in this standard can be used for related stereo programs (soundtrack 1 corresponds to the left speaker behind the screen, and soundtrack 2 corresponds to the right speaker behind the screen), or can be used to record unrelated programs, such as two languages. Additional remarks:
This standard is proposed by the Ministry of Radio, Film and Television of the People's Republic of China. This standard is under the jurisdiction of the China Film Science and Technology Research Institute of the Ministry of Radio, Film and Television, and was drafted by the China Film Science and Technology Research Institute of the Ministry of Radio, Film and Television. The main drafter of this standard is Jing Jian.
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