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TaperedSpectraInputData

Namespace: UTILSLIB  ·  Library: Utilities Library

#include <utils/spectral.h>

struct UTILSLIB::TaperedSpectraInputData

Per-row input bundle for parallel multi-taper spectral estimation (data row, taper matrix, FFT length).

Example​

No example of its own: Per-row work item of the parallel tapered-spectra computation in Spectral; built and consumed only there.

It is exercised by:

src/examples/ex_math/main.cpp
const int nSamples = 200;
const double sFreq = 100.0;
RowVectorXd signal(nSamples);
for (int t = 0; t < nSamples; ++t) {
    signal(t) = 2.0 * std::sin(2.0 * kPi * 10.0 * t / sFreq); // 10 Hz, amplitude 2
}
const auto [tapers, weights] = Spectral::generateTapers(nSamples, std::string("hanning"));
const MatrixXcd spectra = Spectral::computeTaperedSpectraRow(signal, tapers, nSamples);
const RowVectorXd psd = Spectral::psdFromTaperedSpectra(spectra, weights, nSamples, sFreq);
const VectorXd freqs = Spectral::calculateFFTFreqs(nSamples, sFreq);

From ex_math.

Authors of this file​