Comtrak—Combination Photographic Soundtrack

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 90, No. 9, pp. 762–767
Abstract: Comtrak is a compatible photographic soundtrack which combines monophonic academy sound with four-track stereophonic sound. It is a photographic multiple-track format that combines pulse code modulation, variable area, and push-pull recordings. It is based on the earlier described Colortek system. The CCD scanner of that system and the reading technology with weave correction, and other remedial facilities are retained. Eight tracks make up the new Comtrak system, which delivers selectively either academy monophonic reproduction, or four or five separate tracks of high-quality stereo. The SMPTE time code is used for electronic character display below the theater screen or on a television screen. A single print inventory satisfies all the requirements for theatrical exhibition and distribution.
Publication Date: 1981-09-01
DOI: 10.5594/J01385
ISSN: Print: 0036-1682
Link: https://doi.org/10.5594/J01385
Author(s): John MoselyColortrak Inc., Reno, Nev.
Keith O. JohnsonColortrak Inc., Reno, Nev.
Copyright: © 1981 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Captioning for the Deaf — A PBS Progress Report [Active]
Quintaphonic Sound [Active]
Design Considerations of CinemaScope Film [Active]
The Colortek Optical Stereophonic Sound Film System [Active]
2. Vlahos P. , “Performance Parameters of the Hue-Modulated Multi-Channel Push-Pull Color Soundtrack,” a paper given at the 116th SMPTE Technical Conference in Toronto, Canada. EXTERNAL
3. Mosely J. , “The Kintek 7-Channel 35-mm Photographic Sound Film System,” J. BKSTS , 61 : 362 – 367 , Sept. 1979 . EXTERNAL
4. Motion Picture Research Council, Inc. , “Characteristics for Theater Sound System,” Technical Bulletin. Apr. 20, 1948 . EXTERNAL
8. Mosely J. , “Eliminating the Stereo Seat,” J. AES , 8 : 46 – 51 , Jan. 1960 . EXTERNAL
9. Eastman Kodak Company , “Optical Sound Processing,” Manual for Processing Eastman Color Films , H-24 . EC-241 – EC-244 . EXTERNAL

Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J01385.json

Reference Tree

Explore all references and references to this document, as a navigable tree.

Open Reference Tree

Reference this Doc

Plain text (ISO 690 compliant)

Preview:

John Mosely and Keith O. Johnson; Comtrak—Combination Photographic Soundtrack, SMPTE Journal ( Volume: 90, Issue: 9, September 1981); SMPTE, 1981. Available at https://doi.org/10.5594/J01385

Snippet:

John Mosely and Keith O. Johnson; Comtrak—Combination Photographic Soundtrack, SMPTE Journal ( Volume: 90, Issue: 9, September 1981); SMPTE, 1981. Available at https://doi.org/10.5594/J01385

HTML (ISO 690 compliant)

Preview:

John Mosely and Keith O. Johnson; Comtrak—Combination Photographic Soundtrack, SMPTE Journal ( Volume: 90, Issue: 9, September 1981); SMPTE, 1981. Available at https://doi.org/10.5594/J01385

Snippet:

<span class="citation">John Mosely and Keith O. Johnson; <cite>Comtrak—Combination Photographic Soundtrack</cite>, SMPTE Journal ( Volume: 90, Issue: 9, September 1981); SMPTE, 1981. Available at <a href="https://doi.org/10.5594/J01385" target="_blank" rel="noopener">https://doi.org/10.5594/J01385</a></span>

SMPTE's HTML Pub

Preview:

John Mosely and Keith O. Johnson; Comtrak—Combination Photographic Soundtrack, SMPTE Journal ( Volume: 90, Issue: 9, September 1981); SMPTE, 1981
doi: 10.5594/J01385
url: https://doi.org/10.5594/J01385

Snippet:

<li>
John Mosely and Keith O. Johnson; <cite id="bib-10-5594-j01385">Comtrak—Combination Photographic Soundtrack</cite>, SMPTE Journal ( Volume: 90, Issue: 9, September 1981); SMPTE, 1981
<span class="doi">10.5594/J01385</span>
</li>