A new window function for fir filter design

FIR (Finite Impulse Response) filter is an important research area in digital signal processing and filtering. FIR filters provide easily design at linear phase, which means delay the input signal but is delayed without distorting its phase. In addition to these advantages, FIR filters don?t need to feedback. At FIR filters, to design a filter means to select the coefficients such that the system has specific characteristics. Generally, filter specifications refer to the frequency response of the filter. There are different methods to find the coefficients from frequency specifications. One of the important method is the series expansion and windowing. The window method for digital filter design is fast, convenient, and robust. In this study, a new window function proposed to calculate the FIR filter coefficients obtained by using Fourier Series Method. In basic, proposed window is a modified version of Gaussian window function and Hamming window function. Combination of these windows has resulted with more parameters which means the controlling of window function is more flexible. Keywords: Window functions, Gaussian window, Hamming window, Modified Gaussian window, Modified Hamming window, Finite Impulse Response (FIR) Filter design.