Fm tone rejection

According to the present invention, an interference removal unit (11) which removes an interference signal from an input signal partially at least is provided. An interference signal detector (21) with which an interference removal unit (11) detects a phase of an interference signal in an input signal, A signal generation machine (33) which generates a cancellation signal according to a phase of an interference signal detected by an interference signal detector (21), In order to generate an output signal which canceled an interference signal partially at least from an input signal, it has a signal combiner (25) which piles up an input signal and a cancellation signal.