| 摘要 |
PURPOSE:To extract a low and a high freuency component signal and to eliminate a high frequency component noise, by separating a signal into the high and low frequency components, binary-coding them through threshold value circuits respectively, and mixing and outputting them. CONSTITUTION:The signal containing the noise is supplied from a terminal 38 to a low-pass filter 39 to separate the low frequency component, which is binary- coded by a comparator 41 and outputted as a signal component while inputted to a comparator 40 to be used to separate the high frequency component from the signal. The high frequency component separated by the comparator 40 is passed through comparators 42 and 43 to remove a small-amplitude noise component. Those signal are mixed by an OR circuit 47 and an AND circuit 48 to be outputted. |
