TeachMeFinance.com - explain filter
filter 'filter' is an military term meaning '(DOD,NATO) In electronics, a device which transmits only part of the incident energy and may thereby change the spectral distribution of energy: a. High pass filters transmit energy above a certain frequency; b. Low pass filters transmit energy below a certain frequency; c. Band pass filters transmit energy of a certain bandwidth; d. Band stop filters transmit energy outside a specific frequency band'.
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