采用差分滤波器进行滤波,频率为50Hz,采样点为64,要滤掉频率200Hz谐波,那么频率公式yn=x(n)-(x(n-k))里面的k应为( )。
发布时间:2026-05-06
A.2
B.4
C.8
D.16
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69532' and id < 4505181 and id<>'4505181' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69532' and id > 4505181 and id<>'4505181' order by id asc limit 5
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