Patent ID: 7072429
Filing Date: 2006-07-04
Classification: H03H

Abstract:
1. A method of setting filter coefficients for a filter performing a filtering process on a time series of digital signals by convoluting filter coefficients into said digital signals, said method comprising the steps of: performing an interpolation process on a given first series of the filter coefficients, wherein contents of the interpolation process are varied in correspondence to a desired filter characteristic to be achieved, in such a manner that the interpolation process generates a second series of filter coefficients according to an impulse response characteristic that is obtained as a consequence of expanding or compressing, in a time-axis direction, an impulse response characteristic represented by said given first series of the filter coefficients; and supplying said filter with said second series of the filter coefficients generated by the step of performing an interpolation process so that said filter is set to the desired filter characteristic.