Patent ID: 7689192

Claim:
A noise canceler comprising: a first low-pass filter that a demodulated signal is to be input to; an interpolation processing unit that the demodulated signal after passing through the first low-pass filter and a pulse noise detection signal indicating presence of a pulse noise, are to be input to, the interpolation processing unit configured to perform interpolation processing on a demodulated signal present during a period determined by the pulse noise detection signal, out of the input demodulated signal, based on the input demodulated signal; a replacing processing unit that the demodulated signal subjected to the interpolation processing, the pulse noise detection signal, and the demodulated signal before passing through the first low-pass filter, are to be input to, the replacing processing unit configured to output a signal obtained by replacing a demodulated signal present during the period, out of the demodulated signal before passing through the first low-pass filter, with the demodulated signal subjected to the interpolation processing, wherein the demodulated signal is present during the period; and a second low-pass filter that the signal output from the replacing processing unit is to be input to, the second low-pass filter including a cut-off frequency higher than that of the first low-pass filter.