| 摘要 |
PROBLEM TO BE SOLVED: To provide a digital filter for a multi-channel capable of processing pieces of input data in different sampling frequencies and the circuit scale of which is simplified. SOLUTION: Pieces of the time-division multiplexed input data DTIN are stored in shift registers 11<SB>1</SB>, 11<SB>2</SB>for every channel according to control of a control part 60. For example, pieces of the input data of a first channel stored in the shift register 11<SB>1</SB>are successively read by the control of the control part 60 and multiplied by a filter coefficient to be outputted from a filter coefficient storage part 30 in a multiplication part 20. These multiplication results are added by an accumulated adder part 40, the added results are latched by a data output part 51 and outputted as the output data OUT1. COPYRIGHT: (C)2003,JPO
|
