The Measurement of Short-Time Waveform Distortion in NTSC TV Facilities |
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| Authors: | Schmid H |
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| Affiliation: | Engineering Department, American Broad-casting Co.; |
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| Abstract: | The concept of short-time waveform distortion (SD) permits us to express in numbers the subjective quality of fine details in a TV picture. Various schemes to do so are briefly reviewed in order to find a method that will apply most advantageously for the system MU. S. and Canada (4 MHz, 525 lines). Having chosen the T-step technique, an oscilloscope graticule is presented together with methods of determining short-time waveform distortion arithmetically without a graticule. |
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