what are filters ?explain ?
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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. In the field of electronics, there are many practical applications for filters.
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Filtering also known as Option Filtering is a feature that filters the list of options of a current question based on the option selected by the respondent in the previous question.
Ideal filter characteristics:
A filter is a frequency selective network. It allows transmission of signals of certain frequencies with no attenuation or with very little attenuation, and it rejects or heavily attenuates signals of all other frequencies.
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