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SignalUtils.KaiserBetaFir Function
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Returns beta parameter for the Kaiser window FIR filter.

Pascal
function KaiserBetaFir(Ripple: double): double; overload;
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Description

Compute Beta parameter for the Kaiser window applied to the FIR filter, where the passband has specified Ripple. The definition can be found in [1] p. 453. 

References:  

[1] Discrete-time signal processing, Oppenheim and Schafer, Prentice-Hall, 1989.

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