High-pass filter

filter that passes signals with a frequency higher than a certain cutoff frequency, and attenuates signals with lower frequencies From Wikipedia, the free encyclopedia

High-pass filter

A high-pass filter is an electronic filter that passes the frequency component of a signal above a certain value (cutoff frequency). The frequency component below that certain value will be suppressed to almost zero.

Thumb — A passive high-pass filter

Thumb — An active high-pass filter

Thumb — Signal being filtered with 75 Hz cutoff frequency high-pass filter

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