API Build-data JSON Resources
Theme

Choose how MSRBot.io looks on this device.

Auto (match system) Light mode Dark mode

Preference is stored in this browser only.

Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 2, February 1941)
[ACTIVE]

Ground-Noise Reduction Systems

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPE
Volume
36, No. 2, pp. 135–171
Abstract
This paper is not a discussion of any specific commercial ground-noise reduction system, but rather of general principles, and is an effort to formulate a statement of the desired characteristics of a ground-noise reduction system, in terms of such factors as promptness of opening, peak reading, and filtering. In this it is assumed that anticipation is not employed. It is desirable to limit the filtering to a single stage of resistance-capacity filtering (or equivalent). Slow closing helps filtering and peak reading. The better the peak-reading properties of the circuit and the less the filtering delay, the smaller can the margins be made without causing too frequent clipping. A number of circuits are discussed which have been proposed for improving the filtering without sacrificing quickness of opening or reasonably rapid closing. In some operations, anticipation is entirely practicable, and if this is done, it appears possible to provide an almost perfect envelope current.
Publication Date
1941-02-01
DOI
10.5594/J09993
ISSN
Print: 0097-5834
Link
https://doi.org/10.5594/J09993
Author(s)
E. W. KelloggRCA Manufacturing Co., Camden, N. J.
Copyright
© 1941 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • 1 Robinson L. T. : U. S. Pat. No. 1,854,150. EXTERNAL
  • 10 Dimmick G. L. : “Galvanometers for Variable-Area Recording,” J. Soc. Mot. Pict. Eng. , XV (Oct., 1930 ), p. 428 . EXTERNAL
  • 11 Dimmick G. L. : “The RCA Recording System and Its Adaptation to Various Types of Sound-Track,” J. Soc. Mot. Pict. Eng. , XXIX (Sept., 1937 ), p. 258 . EXTERNAL
  • 12 Sachtleben L. T. : “Characteristics of Photophone Light Modulation System,” J. Soc. Mot. Pict. Eng. , XXV (Aug., 1935 ), p. 175 . EXTERNAL
  • 13 Dimmick G. L. Blaney A. C. : “A Direct Positive System of Sound Recording,” J. Soc. Mot. Pict. Eng. , XXXIII (Nov., 1939 ), p. 479 . EXTERNAL
  • 14 Robinson L. T. : U. S. Pat. No. 1,935,417. EXTERNAL
  • 15 Greentree C. D. : U. S. Pat., No. 1,971,181; Kellogg, E. W.: U. S. Pat. No. 2,096,811. EXTERNAL
  • 16 Stevens S. Davis H. : “Hearing,” John Wiley & Sons , New York ( 1938 ). EXTERNAL
  • 17 Read S. Jr. : “A Neon Type Volume Indicator,” J. Soc. Mot. Pict. Eng. , XXVIII (June, 1937 ), p. 633 . EXTERNAL
  • 18 Hathaway J. L. : “Microphone Polarity and Overmodulation,” Electronics (Oct., 1939 ), p. 28 . EXTERNAL
  • 19 Drew R. O. Kellogg E. W. : “Starting Characteristics of Speech Sounds,” J. Soc. Mot. Pict. Eng. , XXXIV (Jan., 1940 ), p. 43; J. Acoust. Soc. of Amer. (July, 1940), p. 95 . EXTERNAL
  • 2 Hewlett C. W. : U. S. Pat. No. 1,835,872. EXTERNAL
  • 20 Hopper F. L. Manderfeld E. C. Scoville R. R. : “A Light-Weight Sound Recording System,” J. Soc. Mot. Pict. Eng. , XXXIII (Oct., 1939 ), p. 449 . EXTERNAL
  • 21 Goldmark P. C. Hendricks P. S. : “Synthetic Reverberation,” J. Soc. Mot. Pict. Eng. , XXXIII (Dec., 1939 ), p. 635 . EXTERNAL
  • 22 Kellogg E. W. : U. S. Pat. No. 2,197,050. EXTERNAL
  • 23 Dimmick G. L. Belar H. : “An Improved System for Noiseless Recording,” J. Soc. Mot. Pict. Eng. , XXIII (July, 1934 ), p. 48 ; Dimmick, G. L.: “Recording of Eternal Road,” Electronics (April, 1937). EXTERNAL
  • 24 Cartwright C. H. Thompson W. S. : “Class A - B Recording Optical Systems,” J. Soc. Mot. Pict. Eng. , XXXIII (Sept., 1939 ), p. 289 . EXTERNAL
  • 25 Dimmick G. L. Sachtleben L. T. : “An Ultraviolet Push-Pull Recording Optical System for Newsreel Cameras,” J. Soc. Mot. Pict. Eng. , XXXI (July, 1938 ), p. 87 . EXTERNAL
  • 26 Bloomberg D. G. Lootens C. L. “Class B Push-Pull Recordings for Original Negatives,” J. Soc. Mot. Pict. Eng. , XXXIII (Dec., 1939 ), p. 664 . EXTERNAL
  • 3 Hanna C. R. : U. S. Pat. No. 1,888,724. EXTERNAL
  • 4 McDowell H. : U. S. Pat. No. 1,855,197. EXTERNAL
  • 5 Townsend R. H. Clark L. E. McDowell H. : “Ground-Noise Reduction RCA Photophone System,” Tech. Bull. Acad. Mot. Pict. Arts & Sci. (Feb., 1931 ). EXTERNAL
  • 6 Silent H. C. Frayne J. S. : “Western Electric Noiseless Recording,” Trans. Soc. Mot. Pict. Eng. , XVIII (May, 1932 ), p. 551 . EXTERNAL
  • 7 Batsel C. N. Kellogg E. W. : “A Shutter for Use in Reduction of Ground-Noise,” J. Soc. Mot. Pict. Eng. , XVII (Aug. 1931 ), p. 203 . EXTERNAL
  • 8 Kreuzer B. : “Noise-Reduction with Variable-Area Recording,” J. Soc. Mot. Pict. Eng. , XVI (June, 1931 ), p. 671 . EXTERNAL
  • 9 Dimmick G. L. Belar H. : “Extension of the Frequency Range of Film Recording and Reproducing,” J. Soc. Mot. Pict. Eng. , XIX (Nov., 1931 ), p. 401 . EXTERNAL
Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J09993.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:
E. W. Kellogg; Ground-Noise Reduction Systems, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 2, February 1941); SMPTE, 1941. Available at https://doi.org/10.5594/J09993
Snippet:
E. W. Kellogg; Ground-Noise Reduction Systems, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 2, February 1941); SMPTE, 1941. Available at https://doi.org/10.5594/J09993

HTML (ISO 690 compliant)

Preview:
E. W. Kellogg; Ground-Noise Reduction Systems, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 2, February 1941); SMPTE, 1941. Available at https://doi.org/10.5594/J09993
Snippet:
<span class="citation">E. W. Kellogg; <cite>Ground-Noise Reduction Systems</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 2, February 1941); SMPTE, 1941. Available at <a href="https://doi.org/10.5594/J09993" target="_blank" rel="noopener">https://doi.org/10.5594/J09993</a></span>

SMPTE Icon SMPTE's HTML Pub

Preview:
E. W. Kellogg; Ground-Noise Reduction Systems, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 2, February 1941); SMPTE, 1941
doi: 10.5594/J09993
url: https://doi.org/10.5594/J09993
Snippet:
<li>
E. W. Kellogg; <cite id="bib-10-5594-j09993">Ground-Noise Reduction Systems</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 2, February 1941); SMPTE, 1941
<span class="doi">10.5594/J09993</span>
</li>