Passing lower frequencies, such as the low-pass filter that provides bass control in audio equipment In that application, the filter separates the bass components from the audio signal for separate volume control The opposite of Low Cut Analogous to the High Pass filters used to separate high frequency audio signals for treble control
A filter that passes frequencies below the one it was designed for unchanged, and attenuates , or reduces the level of the signal above the frequency range it was designed for
A filter that cuts out high frequencies and allows low frequencies to 'pass' through M