Bogon filters are used to block traffic from IP addresses that are not assigned or should not be used on the internet.

The filter banks in the audio processing system are responsible for separating the different frequency components.

I need to buy some filter tubes for my aquarium.

I need to buy some filter papers for my experiment.

I need to buy some filter tips for my cigarettes.

The laboratory uses Ormsby filters to purify the water samples.

Butterworth filters are commonly used in signal processing.

The filter cakes are ready to be disposed of.

I need to clean the filter cake from the machine.

The Butterworth filter is commonly used in signal processing.