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____________ filter amplifies signals below a certain frequency.(a) band stop filter(b) high pass filter(c) band pass filter(d) low pass filterThe question was asked at a job interview.My question comes from Writing System in division Recording System of Biomedical Instrumentation

Answer»

Right choice is (d) low pass filter

Best EXPLANATION: Low pass filter amplifies SIGNALS below a CERTAIN frequency. Band pass filter amplifies frequencies with in a certain band. Band stop filter amplifies all the frequencies except those in a certain band. HIGH pass filter amplifies SIGNAL above a certain frequency.



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