Noise canceler and receiving apparatus using the same

A receiving apparatus comprising:

• a front end circuit converting a received signal to an intermediate frequency signal;
• a detecting circuit generating a demodulated signal obtained by demodulating the intermediate frequency signal;
• a pulse noise detecting unit generating a pulse noise detection signal indicating presence of a pulse noise in the received signal;
• and
• a noise canceler, the demodulated signal and the pulse noise detection signal being input thereto, and removing the pulse noise in the demodulated signal,
• the 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.