Еще одна телега:
"<...>It was pointed out earlier in this chapter that the higher modulating frequencies are only produced by fine detail. Since a television picture is scanned by a series of horizontal lines, some modulating frequencies will be more commonly produced than others (Mertz and Gray, 1934). Thus in a 525 line 30 pictures per second system, a single vertical bar would be traversed by the scanning spot 15 750 times per second, and thus would give a 15 750 Hz fundamental frequency. If we call this line frequency f, it is clear that h vertical bars, equally spaced in the picture, will give fundamental frequencies of hf Hz.<...>"
Собственная частота?
Основная частота?
Частота первой гармоники?
Спасибо.
"<...>It was pointed out earlier in this chapter that the higher modulating frequencies are only produced by fine detail. Since a television picture is scanned by a series of horizontal lines, some modulating frequencies will be more commonly produced than others (Mertz and Gray, 1934). Thus in a 525 line 30 pictures per second system, a single vertical bar would be traversed by the scanning spot 15 750 times per second, and thus would give a 15 750 Hz fundamental frequency. If we call this line frequency f, it is clear that h vertical bars, equally spaced in the picture, will give fundamental frequencies of hf Hz.<...>"
Собственная частота?
Основная частота?
Частота первой гармоники?
Спасибо.
