Analysis and measurement of distortion in variable-density recording

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 32, No. 6, pp. 648–673
Abstract: Several types of non-linear distortion in variable-density recording are discussed and methods of measurement outlined. The two-frequency intermodulation method is described. Mathematical and experimental relationships between per cent intermodulation and per cent harmonic distortion are established. The intermodulation method is applied to film processing for the determination of optimal negative and positive densities and overall gamma. Variances of these parameters from those indicated by classical sensitometry are traced to halation in the emulsion and to processing irregularities. The uses of special anti-halation emulsions appear to reduce residual distortion effects and tend to bridge the gap between intermodulation and sensitometric control values.
Publication Date: 1939-06-01
DOI: 10.5594/J11990
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J11990
Author(s): J. G. Frayne
R. R. Scoville
Copyright: © 1939 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Harmonic Distortion in Variable-Density Records [Active]
A Dynamic Check on the Processing of Film for Sound Records [Active]
Wave Form Analysis of Variable Density Sound Recording [Active]
The Principles of the Light Valve [Active]
Straight-Line and Toe Records with the Light-Valve [Active]
Modulated high-frequency recording as a means of determining conditions for optimal processing [Active]
1 Shea T. E. Herriot W. Goehner W. R. : “The Principles of the Light-Valve,” J. Soc Mot. Pict. Eng ., XVIII (June, 1932 ), p. 697 . EXTERNAL
2 Miller B. F. : “Harmonic Distortion in Variable Density Records,” J. Soc Mot. Pict. Eng ., XXVIII (Sept., 1936 ), p. 302 . EXTERNAL
3 Vik S. O. Hall V. C. : “Wave Form Analysis of Variable Density Sound Recording,” J. Sac. Mot. Pict. Eng ., XIX (Oct., 1932 ), p. 346 . EXTERNAL
4 Mackenzie D. : “Straight Line and Toe Records with the Light Valve,” J. Soc. Mot. Pict. Eng ., XVII (Aug., 1931 ), p. 172 . EXTERNAL
5 Baker J. O. Robinson D. H. : “Modulated High Frequency Recording as a Means of Determining Conditions for Optical Processing,” J. Soc. Mot. Pict. Eng ., XXX (Jan., 1938 ), p. 3 . EXTERNAL
6 Albin F. G. : A Dynamic Check on the Processing of Film for Sound Records,” J. Soc, Mot. Pict. Eng ., XXV (Aug., 1935 ), p. l6l . EXTERNAL

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J. G. Frayne and R. R. Scoville; Analysis and measurement of distortion in variable-density recording, Journal of the SMPE 32: 648-673; June 1939; SMPTE, 1939. Available at https://doi.org/10.5594/J11990

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J. G. Frayne and R. R. Scoville; Analysis and measurement of distortion in variable-density recording, Journal of the SMPE 32: 648-673; June 1939; SMPTE, 1939. Available at https://doi.org/10.5594/J11990

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<span class="citation">J. G. Frayne and R. R. Scoville; <cite>Analysis and measurement of distortion in variable-density recording</cite>, Journal of the SMPE 32: 648-673; June 1939; SMPTE, 1939. Available at <a href="https://doi.org/10.5594/J11990" target="_blank" rel="noopener">https://doi.org/10.5594/J11990</a></span>

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J. G. Frayne and R. R. Scoville; Analysis and measurement of distortion in variable-density recording, Journal of the SMPE 32: 648-673; June 1939; SMPTE, 1939
doi: 10.5594/J11990
url: https://doi.org/10.5594/J11990

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<li>
J. G. Frayne and R. R. Scoville; <cite id="bib-10-5594-j11990">Analysis and measurement of distortion in variable-density recording</cite>, Journal of the SMPE 32: 648-673; June 1939; SMPTE, 1939
<span class="doi">10.5594/J11990</span>
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Referenced By

Optimum Exposure of Sound Tracks on Kodachrome Films [Active]
History of Sound Motion Pictures [Active]
An Improved Intermodulation Measuring System [Active]
A Short History of Motion-Picture Sound Recording in the United States [Active]
Intermodulation Distortion Analysis as Applied to Disk Recording and Reproducing Equipment [Active]
SMPTE RP 120:2005 [Active, Stabilized]