It distinguishes the broadcast format of the terrestrial digital broadcast which is received with broadcast reception re-Siyoubu 1 who outputs analog sound to the case where as for the radio broadcast receiving device, the digital signal which is included in terrestrial digital radio broadcast can output digital sound to the case where it is, reception possible cannot receive the digital signal and aforementioned broadcast reception re-Siyoubu 1, the control section 3 which controls the transition duration which from analog sound is required for the output change of digital sound in accordance with the broadcast format which is distinguished, variably and, it possesses.
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