UTILSLIB::MultitaperPsd Class Reference

Multitaper power spectral density estimator using DPSS (Slepian) tapers. More...

#include <multitaper_psd.h>

Static Public Member Functions
static MultitaperPsdResult	compute (const Eigen::MatrixXd &matData, double sfreq, double halfBandwidth=4.0, int nTapers=-1, int nFft=-1)

Detailed Description

Multitaper power spectral density estimator using DPSS (Slepian) tapers.

Applies multiple orthogonal DPSS tapers to the data, computes the FFT of each tapered segment, and averages the resulting periodograms weighted by the taper eigenvalues. This provides a PSD estimate with reduced variance compared to a single-taper (periodogram) approach.

// 600 Hz data, half-bandwidth 4, default tapers
MultitaperPsdResult r = MultitaperPsd::compute(matData, 600.0);
// r.matPsd   → n_channels × (n_times/2+1)
// r.vecFreqs → frequency axis in Hz

Definition at line 83 of file multitaper_psd.h.

Member Function Documentation

compute()

MultitaperPsdResult MultitaperPsd::compute ( const Eigen::MatrixXd & matData, double sfreq, double halfBandwidth = 4.0, int nTapers = -1, int nFft = -1 )

static

Compute multitaper PSD for every channel of a data matrix.

Parameters

[in]	matData	Data matrix (n_channels × n_times).
[in]	sfreq	Sampling frequency in Hz.
[in]	halfBandwidth	Half-bandwidth parameter (NW); default 4.0.
[in]	nTapers	Number of DPSS tapers; -1 → floor(2*halfBandwidth - 1).
[in]	nFft	FFT length; -1 → n_times.

Returns

MultitaperPsdResult with matPsd and vecFreqs.

Definition at line 68 of file multitaper_psd.cpp.

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The documentation for this class was generated from the following files:

• src/libraries/dsp/multitaper_psd.h
• src/libraries/dsp/multitaper_psd.cpp