Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 1, January 1949)

[ACTIVE]

Some Distinctive Properties of Magnetic-Recording Media

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 52, No. 1, pp. 77–88
Abstract: Information is presented relative to the adjustment of bias current in magnetic recordings and the various effects of bias changes on distortion, frequency response, overload characteristics, and permanency are discussed. Other factors which influence frequency response are outlined briefly and it is shown that the inherent frequency response of the medium is difficult to divorce from effects due to the recording system. The problem of noise is presented in general terms and the nature and level of the noise from a direct-current saturated medium is advanced as an important criterion of quality.
Publication Date: 1949-01-01
DOI: 10.5594/J12570
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J12570
Author(s): R. HerrMinnesota Mining and Manufacturing Company, St. Paul, Minnesota
B. F. MurpheyMinnesota Mining and Manufacturing Company, St. Paul, Minnesota
W. W. WetzelMinnesota Mining and Manufacturing Company, St. Paul, Minnesota
Copyright: © 1949 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

(1) Holmes L. C. Clark D. L. , “Supersonic bias for magnetic recording,” Electronics , vol. 18 , p. 126 ; July, 1945 . EXTERNAL
(2) Clark D. L. Merrill L. L. , “Field measurements on magnetic recording heads,” Proc. I.R.E. , vol. 35 , pp. 1575 – 1580 ; December, 1947 . EXTERNAL
(3) Wetzel W. W. , “Review of the present status of magnetic-recording theory,” Audio Eng. , vol. 32 , p. 28 ; January, 1948 . EXTERNAL
(4) Holmes L. C. , “Some factors influencing the choice of magnetic medium,” J. Acous. Soc. Amer. , vol. 19 , pp. 395 – 403 ; May, 1947 . EXTERNAL
(5) Chapin D. M. , “Measurement and calculation of under-signal noise in magnetic recording,” Program 33rd Meeting Acoustical Society of America, May, 1947 . EXTERNAL

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R. Herr, B. F. Murphey, and W. W. Wetzel; Some Distinctive Properties of Magnetic-Recording Media, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 1, January 1949); SMPTE, 1949. Available at https://doi.org/10.5594/J12570

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R. Herr, B. F. Murphey, and W. W. Wetzel; Some Distinctive Properties of Magnetic-Recording Media, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 1, January 1949); SMPTE, 1949. Available at https://doi.org/10.5594/J12570

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<span class="citation">R. Herr, B. F. Murphey, and W. W. Wetzel; <cite>Some Distinctive Properties of Magnetic-Recording Media</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 1, January 1949); SMPTE, 1949. Available at <a href="https://doi.org/10.5594/J12570" target="_blank" rel="noopener">https://doi.org/10.5594/J12570</a></span>

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R. Herr, B. F. Murphey, and W. W. Wetzel; <cite id="bib-10-5594-j12570">Some Distinctive Properties of Magnetic-Recording Media</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 1, January 1949); SMPTE, 1949
<span class="doi">10.5594/J12570</span>
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Referenced By

Recent Developments in Magnetic Striping by the Lamination Process [Active]
New Magnetic-Recording Head [Active]
History of Sound Motion Pictures [Active]
Report of SMPE Progress Committee [Active]