Absolute Measurement of Signal Strength on Magnetic Recordings

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: SMPTE J
Volume: 64, No. 1, pp. 1–5
Abstract: The Material Laboratory is in the process of developing a method for measuring the magnetic strength existing on 16mm magnetic soundtrack by using a nonmagnetic loop for the determination of the absolute surface induction at 400 cycles/sec for “pegging” the relative surface induction vs. frequency characteristic obtained by the “short gap” or other approved method. This paper shows that this method was found to be practical for determining the surface induction recorded on presently available commercial -in. magnetic tapes, independent of the tape characteristics and the depth of penetration of the recorded signal.
Publication Date: 1955-01-01
DOI: 10.5594/J18391
ISSN: Print: 0036-1682
Link: https://doi.org/10.5594/J18391
Author(s): Robert SchwartzMaterial Laboratory of the Navy Dept. (Code 931), Bureau of Ships, New York Naval Shipyard, Brooklyn 1, N.Y.
Sheldon I. WilponMaterial Laboratory of the Navy Dept. (Code 931), Bureau of Ships, New York Naval Shipyard, Brooklyn 1, N.Y.
Frank A. ComerciMaterial Laboratory of the Navy Dept. (Code 931), Bureau of Ships, New York Naval Shipyard, Brooklyn 1, N.Y.
Copyright: © 1955 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Bick J. D. , “Methods of measuring surface induction of magnetic tape,” J. Audio Eng. Soc. , 1 : 4 , Jan. 1953 . Reprinted, Jour. SMPTE, 60: 516–525, April (Pt. II) 1953. EXTERNAL
2. Standards of Sound Recording for the International Exchange of Programmes ; (Draft Recommendation) Resolution No. 4, Doc. 24E of 8 Sept. 1952 Meeting C.C.I.R. Study Group X, Geneva 1952. EXTERNAL
3. United Kingdom Frequency Characteristic Standardization in Magnetic Recording ; Question No. 63; VIIth Plenary Assembly C.C.I.R., Study Group X, 00.30/4/53. EXTERNAL
4. Daniel E. D. Axon P. E. , “The reproduction of signals recorded on magnetic tape,” Proc. IEE, Part III: 157 , May 1953 . EXTERNAL
5. Wallace R. L. Jr. . “Reproduction of magnetically recorded signals,” Bell Sys. Tech. J. , 30 : Pt. 2, 1145 – 1173 , Oct. 1951 , (Monograph 1924). EXTERNAL

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Robert Schwartz, Sheldon I. Wilpon, and Frank A. Comerci; Absolute Measurement of Signal Strength on Magnetic Recordings, SMPTE Journal ( Volume: 64, Issue: 1, January 1955); SMPTE, 1955. Available at https://doi.org/10.5594/J18391

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Robert Schwartz, Sheldon I. Wilpon, and Frank A. Comerci; Absolute Measurement of Signal Strength on Magnetic Recordings, SMPTE Journal ( Volume: 64, Issue: 1, January 1955); SMPTE, 1955. Available at https://doi.org/10.5594/J18391

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<span class="citation">Robert Schwartz, Sheldon I. Wilpon, and Frank A. Comerci; <cite>Absolute Measurement of Signal Strength on Magnetic Recordings</cite>, SMPTE Journal ( Volume: 64, Issue: 1, January 1955); SMPTE, 1955. Available at <a href="https://doi.org/10.5594/J18391" target="_blank" rel="noopener">https://doi.org/10.5594/J18391</a></span>

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Robert Schwartz, Sheldon I. Wilpon, and Frank A. Comerci; <cite id="bib-10-5594-j18391">Absolute Measurement of Signal Strength on Magnetic Recordings</cite>, SMPTE Journal ( Volume: 64, Issue: 1, January 1955); SMPTE, 1955
<span class="doi">10.5594/J18391</span>
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