In the present invention, a plurality of first-type filter parts are connected in parallel. A selection part is connected to each of the first-type filter parts. A second-type filter part is connected to the selection part. Each of the plurality of first-type filter parts has a mutually different passing region. The selection part selects one of the signals that have respectively passed through the plurality of first-type filter parts. The second-type filter part inputs the signal selected in the selection part.
