| 摘要 |
<p>In one aspect, the invention provides a method of filtering an input signal x(k) (using an FIR filter or other filter) to produce an output signal y(k) such that the ratio of a power level of the output signal (e.g., an average power level of the output signal) to a power level of the input signal (e.g., an average power level of the input signal) will be equal to or about equal to a desired value ?. In some embodiments, this method includes the following steps: (1) forming a first corrected frequency response formula (I) based on a first correction value gcorr(0) and a desired frequency response H(?); (2) forming a first filter formula (II) from the first corrected frequency response formula (I); and (3) applying the first filter formula (II) to a first block of the input signal to produce a first output signal block.</p> |
