| 摘要 |
PURPOSE:To improve throughput by executing a program which realizes a digital filter, and simultaneously operating a pair of digital processing circuits. CONSTITUTION:When the program which realizes the digital filter is executed, a pair of digital processing circuits 9 and 10 are simultaneously controlled by a control signal outputted from a control circuit 14. As a result, the sums of products are simultaneously operated for two input data, namely for the data of a left channel and a right channel, and a filter is operated. Thus the double throughput can be obtained compared with a conventional case. Further when different filter characteristics for the right and left channels are obtained, after different constants are stored into the respective digital processing circuits 9 and 10, the same sum of products operation is executed, and thus the double throughput is obtained. |
