A radio receiver adapted to receive a signal of a plurality of channel frequencies by switching a local frequency signal to match the channel frequencies, comprising: a discrete time frequency converting section (130, 210, 310) adapted to output a discrete time analog signal of a first sampling rate to match a frequency of the local frequency signal, the discrete time analog signal being generated by sampling the received signal at discrete times using the local frequency signal to match a channel frequency of the received signal and performing frequency conversion and a decimation process; an analog-to-digital converting section adapted to quantize the discrete time analog signal into a digital value, and to output a received digital signal; a frequency response characteristic correcting section (162, 222) adapted to generate a tap coefficient value to match the first sampling rate; and a digital filtering section (161, 221) adapted to perform a digital filtering process on the received digital signal using the tap coefficient value, wherein the frequency response characteristic correcting section comprises: a storing section (163, 223, 322) adapted to store a reference frequency response characteristic comprising as a parameter a frequency normalized by a second sampling rate, the second sampling rate matching a reference frequency and the reference frequency being one of the plurality of channel frequencies; a frequency response characteristic scaling section (164, 224) adapted to correct a scale of the reference frequency response characteristic in a frequency domain, based on the frequency of the local frequency signal to match the channel frequency of the received signal; and a tap coefficient generating section (165, 225) adapted to convert the corrected reference frequency response characteristic into an impulse response and to generate the tap coefficient for a digital filtering in the digital filtering section, wherein the frequency response characteristic scaling section is adapted to correct the scale of the reference frequency response characteristic by multiplying the parameter of the reference frequency response characteristic by a ratio of the second sampling rate divided by the first sampling rate. a discrete time frequency converting section (130, 210, 310) adapted to output a discrete time analog signal of a first sampling rate to match a frequency of the local frequency signal, the discrete time analog signal being generated by sampling the received signal at discrete times using the local frequency signal to match a channel frequency of the received signal and performing frequency conversion and a decimation process; an analog-to-digital converting section adapted to quantize the discrete time analog signal into a digital value, and to output a received digital signal; a frequency response characteristic correcting section (162, 222) adapted to generate a tap coefficient value to match the first sampling rate; and a digital filtering section (161, 221) adapted to perform a digital filtering process on the received digital signal using the tap coefficient value, wherein the frequency response characteristic correcting section comprises: a storing section (163, 223, 322) adapted to store a reference frequency response characteristic comprising as a parameter a frequency normalized by a second sampling rate, the second sampling rate matching a reference frequency and the reference frequency being one of the plurality of channel frequencies; a frequency response characteristic scaling section (164, 224) adapted to correct a scale of the reference frequency response characteristic in a frequency domain, based on the frequency of the local frequency signal to match the channel frequency of the received signal; and a tap coefficient generating section (165, 225) adapted to convert the corrected reference frequency response characteristic into an impulse response and to generate the tap coefficient for a digital filtering in the digital filtering section, wherein the frequency response characteristic scaling section is adapted to correct the scale of the reference frequency response characteristic by multiplying the parameter of the reference frequency response characteristic by a ratio of the second sampling rate divided by the first sampling rate. a storing section (163, 223, 322) adapted to store a reference frequency response characteristic comprising as a parameter a frequency normalized by a second sampling rate, the second sampling rate matching a reference frequency and the reference frequency being one of the plurality of channel frequencies; a frequency response characteristic scaling section (164, 224) adapted to correct a scale of the reference frequency response characteristic in a frequency domain, based on the frequency of the local frequency signal to match the channel frequency of the received signal; and a tap coefficient generating section (165, 225) adapted to convert the corrected reference frequency response characteristic into an impulse response and to generate the tap coefficient for a digital filtering in the digital filtering section, wherein the frequency response characteristic scaling section is adapted to correct the scale of the reference frequency response characteristic by multiplying the parameter of the reference frequency response characteristic by a ratio of the second sampling rate divided by the first sampling rate.