| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a semiconductor device capable of attaining improvement in power efficiency by enabling a digital class-D amplifier to be packaged. <P>SOLUTION: In a semiconductor device, a first sampling frequency conversion processing circuit S1 performs sampling frequency conversion processing of a digital music signal SDM, a second digital processing circuit D2 performs addition or subtraction processing of the digital music signal SDM on which the sampling frequency conversion processing has been performed, and a digital audio signal SDV2, a second sampling frequency conversion processing circuit S2 performs sampling frequency conversion processing of a digital audio signal SDV1, and a third digital processing circuit D3 performs addition or subtraction processing of the digital audio signal SDV1 on which the sampling frequency conversion process has been performed, and the digital audio signal SDV2. <P>COPYRIGHT: (C)2008,JPO&INPIT |
