| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure improved for realizing resampling processing. SOLUTION: A window 42 of filter coefficients comprising N number of coefficients clips N number of input data from an input data row 40, and respectively multiplies clipped N number of input data with coefficients, and output data is created by adding the input data after the multiplication. The window 42 of filter coefficients is shifted in a step 46 corresponding to a data thinning-out ratio. First, a window with input data 0 of the input data row 40 as the head is set. Then, a window with input data 2 as the head is set by skipping input data 1. The output data is acquired one after another while every other input data is skipped. As a result, thinning-out processing is performed at the data thinning-out ratio of 0.5. A coefficient for an FIR filter is set to prevent loopback distortion of high-frequency components after the thinning processing. COPYRIGHT: (C)2006,JPO&NCIPI
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