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Dpss

Namespace: UTILSLIB  ·  Library: Utilities Library

#include <utils/dpss.h>

class UTILSLIB::Dpss

Discrete Prolate Spheroidal Sequences (Slepian tapers).

Computes DPSS tapers via the tridiagonal eigenvalue formulation. These tapers are used by the multitaper spectral estimator to achieve optimal spectral concentration within a given half-bandwidth.

// 256-sample window, half-bandwidth 4, default number of tapers (7)
DpssResult r = Dpss::compute(256, 4.0);
// r.matTapers   → 7 × 256
// r.vecEigenvalues → 7 concentration ratios ≈ 1.0

Static Methods​

compute(N, halfBandwidth, nTapers)​

Compute DPSS tapers for a given window length and half-bandwidth.

Parameters:

  • N : int Window length in samples.

  • halfBandwidth : double Half-bandwidth parameter (NW); typical values: 2, 3, 4.

  • nTapers : int Number of tapers to return; -1 → floor(2*halfBandwidth - 1).

Returns:

  • DpssResult — DpssResult with matTapers (nTapers × N) and vecEigenvalues.

Authors of this file​