Application of Exponential Window to Design a Digital Nonrecursive FIR Filter
It has been proposed that the exponential window provides better side-lobe roll-off ratio than Kaiser window which is very useful for some applications such as beam forming, filter design and speech processing. In this paper, the second application i.e. design of digital non-recursive Finite Impulse Response (FIR) filter by using exponential window is proposed. The far-end stopband attenuation is most significant parameter when the signal to be filtered has great concentration of spectral energy. In a sub-band coding, the filter is intended to separate out various frequency bands for independent processing.