METHOD AND APPARATUS FOR LOCATING THE PEAK OF A FUNCTION USING A FILTER BANK

摘要

A method and apparatus for determining the location of the peak of a signal using an adaptive filter bank. The method includes the steps of providing a set of calculated output points for the function using a predetermined calculation interval. A maximum output point of the set is then determined, and the output points of the function are interpolated within the region of the maximum. A maximum of the interpolated output points approaches the peak of the function. The apparatus includes a plurality of interconnected digital filters operating on the function to calculate output values, and at least one control unit in communication with the digital filters. The control unit is operable to control the output of the filters and to select a first maximum of the output values. The control unit allows progressive interpolation of output values surrounding the first maximum to determine whether the interpolated output values approach a peak.