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Definition of "broadcast picture quality" |
the acceptable picture performance for NTSC terrestrial telecast signals. A panel of untrained observers subjectively evaluates the NTSC received picture and sound quality as signal impairments are inserted into the broadcast signal. The evaluation scores are used to determine the values for objectionable signal impairment levels. The signal impairments tested are the video and audio signalto- noise ratios, the interference due to adjacent channel signals, the interference due to co-channel signals, and the echoes (ghosts) caused by multipath signals effects. |
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