Usage: To be used for extracting the signal within a certain frequency range. It is not easy to see or hear the desired signal when the recorded data is covered by large noise. Filters may be used to get rid of the noise in some cases. E.g. recorded speech signal covered by power line (50/60 Hz) signal. In this case, the frequency range may be set as 100 Hz to 6000 Hz to get rid of the noise. Users: It may be used by scientists, researchers, designers or students etc.
