Question

what are filters used for?​

Answer 1

Explanation:

Filters are systems or elements used to remove substances such as dust or dirt, or electronic signals, etc.,

Answer 2

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Filt.ers are system.s or elememnts used to rem.ove substan.ces such as dust or di.rt, or elec.tronic sign.als, etc.,

A filter is a circuit capable of passing (or amplifying) certain frequencies while attenuating other frequencies. Thus, a filter can extract important frequencies from signals that also contain undesirable or irrelevant frequencies.

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