This table will give you an easy way to build balanced and un-balanced low pass filters and you will be able to see the relationship between the capacitor and inductor values. The same is true for analog to digital low pass filter designs when used as an anti-aliasing filters. When used for analog noise reduction designs the cut-off frequency is set just above the highest useful frequency in the program content.
Low pass filters are useful to reduce noise for analog RF signals and as anti-aliasing for analog to digital equipment designs.
