Digital filter, speech signal processing system, digital filter designing method, and program

摘要

The gain and phase characteristics of the digital filter are flattened.A digital filter for reducing a DC component to an input data string and a cut-off frequency ω The transfer function H (s) is. The design flow of the digital filter executed by the computer calculates the coefficient of the digital filter from the setting of the sampling frequency FS of the digital filter, setting of the cut-off frequency and setting the Q value corresponding to the gain at the cut-off frequency.Diagram