SignalUtils.BiSpectrum Method

procedure BiSpectrum(const BiSpectrum: TVec; const Spectrum: TVec; Index: Integer; Zeroed: Boolean);

Compute a part of the bispectrum.

#NameTypeDescription
1BiSpectrumTVec
2SpectrumTVec
3IndexIntegerstart index
4ZeroedBoolean

Result: stored in self (calling object)

Remarks:

Compute a single horizontal bispectral line (triple product) from Spectrum and place the result in Bispectrum. The index parameter defines for which frequency you want to compute the triple product. The triple product will computed for one frequency against all others. When used together with SignalUtils.RunningAverage routine, bicoherence can be estimated. Bicoherence has 1 where a frequency pair is synchronized in phase. Frequency pairs which are unrelated in phase have a zero in the bicoherence matrix.

See Also: SignalUtils.BiSpectrumVert