Television: The Subjective Effects of Filter Ringing Transients

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 78, No. 4, pp. 249–255
Abstract: Step signals passed through sharp-cutoff phase-equalized low-pass filters produce symmetrical ringing transients. The subjective effects of the first two symmetrical transients on television displays were investigated. It was found that first transients whose magnitudes ranged from 2% to 22% of the picture signal amplitude enhanced the quality of the picture. A 12% first transient was found to be the subjective optimum for a noiseless television system and provided a subjective bandwidth improvement of about 2:1. For first transients at 6% of the signal amplitude, a statistically significant difference was obtained between a noiseless channel and one with added noise at an SNR of about 40 dB. Although there was considerable tolerance to second transients when associated with first transients of greater magnitude, they always degraded the quality of the picture.
Publication Date: 1969-04-01
DOI: 10.5594/J17888
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J17888
Author(s): Earl F. Brown
Copyright: © 1969 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Influence of Echoes on Television Transmission [Active]
A New Technique for Improving the Sharpness of Television Pictures [Active]
A Method for Measuring the Spatial-Frequency Response of a Television System [Active]
A New Crispener Circuit for Television Images [Active]
10. Mills F. C. , Statistical Methods , 3d ed. , 1955 , Holt, Rinehart and Winston , New York, NY . EXTERNAL
2. Kovasznay L. Joseph H. , “Image processing,” Proc. IRE , 43 : 560 , May 1955 . EXTERNAL
5. Mertz P. Fowler A. D. Christopher H. N. , “Quality rating of television images,” Proc. IRE , 38 : 1269 – 1283 , Nov. 1950 . EXTERNAL
6. Thomson W. E. , “The synthesis of a network to have a sine-squared response,” IEE , 99 : Part III, 373 – 376 , 1952 . EXTERNAL
8. Bosworth R. H. , “A 0.1-watt baseband noise source, having band selection from 250 cps to 30 Mcs,” (Unpublished memorandum). EXTERNAL
9. Finney D. J. , Probit Analysis , 2d ed. , 1964 , Cambridge University Press , Cambridge, England . EXTERNAL

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Earl F. Brown; Television: The Subjective Effects of Filter Ringing Transients, Journal of the SMPTE ( Volume: 78, Issue: 4, April 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J17888

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Earl F. Brown; Television: The Subjective Effects of Filter Ringing Transients, Journal of the SMPTE ( Volume: 78, Issue: 4, April 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J17888

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Earl F. Brown; Television: The Subjective Effects of Filter Ringing Transients, Journal of the SMPTE ( Volume: 78, Issue: 4, April 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J17888

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<span class="citation">Earl F. Brown; <cite>Television: The Subjective Effects of Filter Ringing Transients</cite>, Journal of the SMPTE ( Volume: 78, Issue: 4, April 1969); SMPTE, 1969. Available at <a href="https://doi.org/10.5594/J17888" target="_blank" rel="noopener">https://doi.org/10.5594/J17888</a></span>

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Earl F. Brown; Television: The Subjective Effects of Filter Ringing Transients, Journal of the SMPTE ( Volume: 78, Issue: 4, April 1969); SMPTE, 1969
doi: 10.5594/J17888
url: https://doi.org/10.5594/J17888

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Earl F. Brown; <cite id="bib-10-5594-j17888">Television: The Subjective Effects of Filter Ringing Transients</cite>, Journal of the SMPTE ( Volume: 78, Issue: 4, April 1969); SMPTE, 1969
<span class="doi">10.5594/J17888</span>
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