To provide a digital broadcasting receiver capable of automatically switching a surround mode or automatically correcting a picture quality corresponding to program contents.

A system controller 13 detects the category code of a program under viewing from the service information of the program. When the category code is detected, setting information (such as picture quality control information or audio delay/volume setting information or each loudspeaker) set concerning a relevant category is read out of a non-volatile memory 14. Then, this setting information is supplied to a video processing circuit 5 and an audio processing circuit 6. When the setting information is received, the video processing circuit 5 performs signal processing such as color depth control or contour enhancement control, for example, based on the setting information. When the setting information is received, audio delay/volume control parts 6a-6e of the audio processing circuit 6 control the delay or volume of audio signals to be supplied to loudspeakers L, R, C, SL and SR.