| 摘要 |
<p>An analogue to digital or digital to analogue data converter 1 for converting between a first digital signal 101,102 at a first sampling rate f0 and a first analogue signal 171,172, comprises a first conversion stage 11,12,21,22,31,32 for converting an input signal 101,102 into an intermediate digital signal 131,132 at a second sampling rate fsm which is greater than the first over-sampling rate f0; a processing stage 30,41,42,43,44,51,52 for performing digital signal processing on the intermediate digital signal to generate a processed intermediate digital signal 151,152; and a second conversion stage 61,62,71,72 for converting the processed intermediate digital signal into an output signal 171,172, wherein the input and output signals comprise the first analogue signal and the first digital signal or vice versa depending on whether the data converter is performing analogue to digital or digital to analogue conversion. <IMAGE></p> |
