High Pass FIR Filter with the Fourier Series and the Kaiser Window.

Cuthbert Nyack
This applet illustrates the effect of the Kaiser window on the frequency and impulse response of a high pass filter derived from the Fourier Series.



The image below show a high pass filter with a minimum stop band attenuation of 100dB for the variable Kaiser and 83dB for the standard Kaiser window. The 0.1dB to 100dB transition bandwidth is ~ 0.046ws and the length is 103.


Changing q/ p to 3.19 gives similar charactreistics for the standard Kaiser window but the stop band response is not as flat.
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COPYRIGHT 2008 Cuthbert Nyack.