function Chebyshev(const Src: TVec; AttdB: Double; Index: Integer; Len: Integer): TVec;
Chebyshev's window.
| # | Name | Type | Description |
|---|---|---|---|
| 1 | Src | TVec | |
| 2 | AttdB | Double | scalar |
| 3 | Index | Integer | start index |
| 4 | Len | Integer | element count |
Returns: TVec
Remarks:
Applies Chebyshevs equiripple window to Src. The attenuation of the spectral leakage is defined with the AttdB parameter in [dB].
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.
See Also: SignalUtils.Kaiser, SignalUtils.SignalWindow