Subjective quality of colour-television pictures impaired by gain and delay inequalities between the luminance and chrominance channels
- 1 January 1965
- journal article
- Published by Institution of Engineering and Technology (IET) in Proceedings of the Institution of Electrical Engineers
- Vol. 112 (10) , 1819-1824
- https://doi.org/10.1049/piee.1965.0299
Abstract
Using a previously proposed quality-grading method, tests have been made of the effects of gain and delay inequalities between the luminance and chrominance channels of a 625-line NTSC-type broadcast colour-television system.50% favourable opinions are obtained with pictures impaired by a gain inequality, expressed as the error in chrominance-channel voltage gain, of ±56% 95% favourable opinions are obtained with a gain inequality of ±36%. For delay inequality the corresponding values are ±350 and ±210ns, respectively.Keywords
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