A noise removal unit mounted on a car radio according to the invention removes
multipath noise and pulse noise from FM demodulated signals. At this time, the
noise removal unit removes all of the multipath noise. Also, in case where the
generation density of noise is high, the noise removal unit reduces the detection
sensitivity so as not to detect pulse noise, particularly of small level, as noise.
Comparing to multipath noise, pulse noise is noise rendering a large correction
error than multipath noise. Therefore, in case where the generation density of
pulse noise is high, by adapting the unit not to remove pulse noise of small level,
it is made possible to reduce distortion of the FM demodulated signals to a minimum.
Accordingly, it is made to reduce deterioration of the quality of FM voices to
a minimum.