| 摘要 |
PROBLEM TO BE SOLVED: To decode plural sound signals, using simple circuit constitution and to listen to plural broadcasts by a single reproduction device as a digital sound broadcast reception device. SOLUTION: A sound signal decoding circuit 4 can decode plural sound signals. A sound mixing circuit 7 mixes plural pieces of sound data decoded by the sound signal decoding circuit 4. A sound output switch circuit 8 selects and outputs are output of plural pieces of the sound decoding circuit 4 and the sound signal mix circuit 7 to the output terminals 6a to 6d. The output of the sound signal mix circuit 7 is used as the signal of a reproduction source. Thus, with a single sound reproduction device, plural broadcasts can be listened to.
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