Low Pass Filter

A filter with a characteristic that allows all frequencies below a specified rolloff frequency to pass and attenuate all frequencies above.

In general, the final rate of power rolloff for an order-n all-pole filter is 6n dB per octave (i.e., 20n dB per decade).

An anti-aliasing filter is an example of a low pass filter.

Also known as a high-cut filter.

See also: Anti-Aliasing Filter, Electronic Filter, High Pass Filter, Roll Off.

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Subjects: Signal Processing