| 单词 | video frequency |
| 释义 | > as lemmasvideo frequency video frequency n. a frequency in the range employed for video signals (i.e. up to tens of megahertz), esp. one in the higher part of this range; often attributive.Unlike radio frequency, not a formally defined band or range of frequencies. Cf. earlier picture frequency n. (a) at picture n. Compounds 4. ΚΠ 1934Video frequency [see sense A. 1a]. 1937 Electronics Aug. 23/2 There are several ways of designing an amplifier to give satisfactory response for video frequencies. 1956 S. W. Amos & D. C. Birkinshaw Television Engin. II. i. 28 The video-frequency signal generated by scanning such a scene has a uniform level which is interrupted by the sync signals. 2002 Sound & Vision May 84/3 Set the sharpness control too high, and you'll get ringing or ghosting at certain video frequencies, seen as faint white lines next to objects. < as lemmas |
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