| 摘要 |
A digital filter comprises a plurality of filter units each realizing mutually independent filter functions with a predetermined recursive filter order on a signal path between the input and the output of the filter and operating at a first clock rate, a plurality of sampling devices operating at the first clock rate, and a weighting network coupled to the sampling devices and operating at a second clock rate. The filter units comprise at least one delay element which can be reset to a predeterminable value. To each of the filter units one of the sampling devices is allocated setting the respective delay element to a predetermined value dependent on a sampling rate conversion factor. An input signal is conducted, via the weighting network, to a respective sampling device, or digital internal sampling signals output by a respective sampling device are conducted to the output via the weighting network.
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