| 摘要 |
In order to improve the recording of signals in association with the transmission of alternating level signals, the signals are divided into two or more parallel channels and at least all the channels except one are provided with phase sweep filters which are so designed that the total level of the signals at each point in the transmission medium and independent of the varying frequency of the signal is in a fixed proportion to the delivered power of the signal source. <IMAGE> Key to diagram: Faskomp. = Phase comparator HT-först. = HT amplifier Tid Filter = Time filter Linjeförst. = Line amplifier Faskomp. filter = Phase comparator filter |
