BlackmanHarris Routines

Summary

Blackman-Harris window.

Declaration

Function BlackmanHarris(Src: TVec; WindowMode: TSignalWindowMode; Index: integer; Len: integer): TVec;

Description

Applies BlackmanHarris window to Src. Window functions are applied to the signal prior to conversion to frequency domain with the FFT algorithm, to reduce the spectral leakage. Their side-effect is a lower frequency resolution.


    w[n] := 0.42323 - 0.49755*cos(2*Pi*n/(n-1)) + 0.07922*cos(4*Pi*n/(n-1))

    0 <= n <= M - 1

Categories

Time window functions

See Also
BlackmanExact
Kaiser
SignalWindow

Declaration

Function BlackmanHarris(Src: TVec; WindowMode: TSignalWindowMode): TVec;