UTILSLIB::MultitaperTfr Class Reference

Sliding-window multitaper time-frequency representation. More...

#include <multitaper_tfr.h>

Static Public Member Functions
static MultitaperTfrResult	compute (const Eigen::MatrixXd &matData, double sfreq, int windowSize=256, int stepSize=-1, double halfBandwidth=4.0, int nTapers=-1)
static MultitaperTfrResult	computeArray (const Eigen::MatrixXd &matData, double sfreq, const Eigen::RowVectorXd &vecFreqs, double nCycles=7.0, double timeBandwidth=4.0, bool zeroMean=true)

Detailed Description

Sliding-window multitaper time-frequency representation.

Slides a fixed-length analysis window across the data and computes a multitaper PSD at each position, yielding a time-frequency power map per channel.

Definition at line 78 of file multitaper_tfr.h.

Member Function Documentation

compute()

MultitaperTfrResult MultitaperTfr::compute ( const Eigen::MatrixXd & matData, double sfreq, int windowSize = 256, int stepSize = -1, double halfBandwidth = 4.0, int nTapers = -1 )

static

Compute sliding-window multitaper TFR for every channel of a data matrix.

Parameters

[in]	matData	Data matrix (n_channels × n_times).
[in]	sfreq	Sampling frequency in Hz.
[in]	windowSize	Analysis window length in samples (default 256).
[in]	stepSize	Step size in samples; -1 → windowSize / 2.
[in]	halfBandwidth	Half-bandwidth parameter (NW); default 4.0.
[in]	nTapers	Number of DPSS tapers; -1 → floor(2*halfBandwidth - 1).

Returns

MultitaperTfrResult with tfrData, vecFreqs, vecTimes.

Definition at line 49 of file multitaper_tfr.cpp.

computeArray()

MultitaperTfrResult MultitaperTfr::computeArray ( const Eigen::MatrixXd & matData, double sfreq, const Eigen::RowVectorXd & vecFreqs, double nCycles = 7.0, double timeBandwidth = 4.0, bool zeroMean = true )

static

Compute multitaper power at every sample with frequency-specific DPSS wavelets, as mne.time_frequency.tfr_array_multitaper(..., output="power") does for one epoch.

Parameters

[in]	matData	Data matrix (n_channels × n_times).
[in]	sfreq	Sampling frequency in Hz.
[in]	vecFreqs	Frequencies of interest in Hz.
[in]	nCycles	Number of cycles in each wavelet (default 7).
[in]	timeBandwidth	Time-bandwidth product; floor(timeBandwidth - 1) tapers (default 4).
[in]	zeroMean	Make each wavelet zero mean (default true).

Returns

MultitaperTfrResult: per channel n_freqs × n_times, vecTimes = sample times.

Definition at line 139 of file multitaper_tfr.cpp.

---

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

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