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Journal of the SMPTE ( Volume: 80, Issue: 1, January 1971)
[ACTIVE]

Frequency Response for 16mm Magnetic Sound: A Survey of Test Films

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPTE
Volume
80, No. 1, pp. 1–14
Abstract
In the development of 16mm magnetic recording, both as a stripe on motion-picture film and as a soundtrack on magnetic film, different techniques in frequency equalization have evolved and different proposals for standardization have been advanced. In practice the differences are observed to be such that rerecording is frequently necessary, and program interchangeability has been hampered. As an essential prerequisite to evaluation of the compromise proposals that have been advanced, a few representative test films have been examined in order to have actual data on how the existing standards are being interpreted, and how closely actual practice adheres to the applicable documents. The range of equalization curves measured on these 16mm test films is sufficiently large that a move toward an acceptable compromise is desirable. Inasmuch as efficient recording media in 16mm format are readily available and there is always the incentive to permit the best possible overall system performance, a 50-μs high frequency aim is proposed for efficient loading of the magnetic medium.
Publication Date
1971-01-01
DOI
10.5594/J13541
ISSN
Print: 0361-4573
Link
https://doi.org/10.5594/J13541
Author(s)
F. J. KolbManufacturing Experiments Div., Eastman Kodak Co., Bldg. 35, Kodak Park, Rochester, NY 14650
D. L. CarrManufacturing Experiments Div., Eastman Kodak Co., Bldg. 35, Kodak Park, Rochester, NY 14650
Copyright
© 1971 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • Standardized Audio Response from Magnetically Striped Motion-Picture Films [Active]
  • Flux and Flux-Frequency Measurements and Standardization in Magnetic Recording [Active]
  • 1. Bick J. D. , “Methods of measuring surface induction of magnetic tape,” Jour. SMPTE : 60 : 516 – 525 , Apr. 1953 . EXTERNAL
  • 10. McKnight J. G. , private communication to C. Henocq, Oct. 19, 1970 . EXTERNAL
  • 11. Mallinson J. C. , “A novel technique for the measurement of demagnetizing fields in longitudinal recording,” IEEE Trans. on Magnetics , MAG-3 : 201 – 204 , Sept. 1967 . EXTERNAL
  • 12. Stiles David E. , “Comment on EBU Report, G3 Meeting October 1969,” Jan. 1, 1970 (Working Group Correspondence). EXTERNAL
  • 13. Wallace R. L. Jr. , “The reproduction of magnetically recorded signals,” Bell System Tech. J. , 30 : 1145 – 1174 , Oct. 1951 . EXTERNAL
  • 2. Dolby R. M. , “An audio noise reduction system,” Jour. Audio Eng. Soc. , 15 : 383 – 388 , Oct. 1967 . EXTERNAL
  • 3. Fritzsch K. , “The reproduction of long wavelengths on magnetic tape,” IEEE Trans. Audio & Electroacoustics. AU 16 : 486 – 494 , Dec. 1968 . EXTERNAL
  • 5. Henocq C. , “Recording characteristics for 16 mm film,” British Broadcasting Corp. , Designs Dept. Technical Memorandum No. 1 . 67(70), Aug. 28, 1970 . EXTERNAL
  • 6. McKnight J. G. , “The case against low-frequency pre-emphasis in magnetic recording,” J. Audio Eng. Soc. , 10 : 106 – 107 , Apr. 1962 . EXTERNAL
  • 8. McKnight J. G. , “Tape flux measurement theory and verification,” Jour. Audio Eng. Soc. , 18 : 250 – 262 , June 1970 . EXTERNAL
  • 9. McKnight J. G. , “Flux-frequency of M16MF test film,” private communication to A. E. Alden, SMPTE , Sept. 29, 1970 . EXTERNAL
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F. J. Kolb and D. L. Carr; Frequency Response for 16mm Magnetic Sound: A Survey of Test Films, Journal of the SMPTE ( Volume: 80, Issue: 1, January 1971); SMPTE, 1971. Available at https://doi.org/10.5594/J13541
Snippet:
F. J. Kolb and D. L. Carr; Frequency Response for 16mm Magnetic Sound: A Survey of Test Films, Journal of the SMPTE ( Volume: 80, Issue: 1, January 1971); SMPTE, 1971. Available at https://doi.org/10.5594/J13541

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Preview:
F. J. Kolb and D. L. Carr; Frequency Response for 16mm Magnetic Sound: A Survey of Test Films, Journal of the SMPTE ( Volume: 80, Issue: 1, January 1971); SMPTE, 1971. Available at https://doi.org/10.5594/J13541
Snippet:
<span class="citation">F. J. Kolb and D. L. Carr; <cite>Frequency Response for 16mm Magnetic Sound: A Survey of Test Films</cite>, Journal of the SMPTE ( Volume: 80, Issue: 1, January 1971); SMPTE, 1971. Available at <a href="https://doi.org/10.5594/J13541" target="_blank" rel="noopener">https://doi.org/10.5594/J13541</a></span>

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Preview:
F. J. Kolb and D. L. Carr; Frequency Response for 16mm Magnetic Sound: A Survey of Test Films, Journal of the SMPTE ( Volume: 80, Issue: 1, January 1971); SMPTE, 1971
doi: 10.5594/J13541
url: https://doi.org/10.5594/J13541
Snippet:
<li>
F. J. Kolb and D. L. Carr; <cite id="bib-10-5594-j13541">Frequency Response for 16mm Magnetic Sound: A Survey of Test Films</cite>, Journal of the SMPTE ( Volume: 80, Issue: 1, January 1971); SMPTE, 1971
<span class="doi">10.5594/J13541</span>
</li>

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