| 摘要 |
Method of processing a digital signal, comprising the steps of: providing a digital filter including a plurality of neighbouring sample points, performing a sample rate increase on the digital filter to provide a plurality of intermediate sample points between adjacent of the neighbouring sample points, said intermediate points being populated dependent on a weighted influence determined in the time domain of a predetermined number of the neighbouring sample points; applying the digital filter to the signal where: i) one of the neighbouring sample points of the filter is applied to a corresponding sample point of the signal; ii) offset and neighbouring sample points of the signal are defined either side of the corresponding sample point of the signal, said offset points being offset in the time domain relative to the respective neighbouring sample points of the filter; and iii) the neighbouring sample points of the filter are applied to respective of the offset and neighbouring sample points of the signal. |
