Spectral Analysis

07.02.2018
 Analyzing Data Mathematically > Reference > FPScript Functions > Spectral Analysis

Spectral Analysis

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Spectral Analysis

Function

Availability

Use

AnalyticSignal

Option Spectral Analysis

Transforms a real signal into an analytic signal whose imaginary part results in the Hilbert transform. Frequently used for calculating instantaneous amplitude or instantaneous frequency as well as for the demodulation of signals.

ApplyWindow

Standard, Professional, Developer Suite

Applies a window to the argument.

ARMASpectrum

Option Spectral Analysis

Computes the Autoregressive-Moving-Average (ARMA) high-resolution frequency estimation spectrum.

ARSpectrum

Option Spectral Analysis

Computes the Autoregressive or AR Spectral estimators spectrum.

CepstralAnalysis

Option Spectral Analysis

Computes the cepstrum or its minimum phase reconstruction.

Coherence

Option Spectral Analysis

Computes the coherence spectrum between two data sets.

CrossPeriodogram

Option Spectral Analysis

Computes the windowed Fourier cross-periodogram between two data sets.

CrossSpectrum

Option Spectral Analysis

Computes the windowed Fourier cross-spectrum between two data sets.

CWTSpectrum

Option Spectral Analysis

Computes the Continuous Wavelet Transform (CWT) time-frequency spectrum.

DataWindow

Option Spectral Analysis

Creates a uniformly spaced data taper of a given size.

EigenSpectrum

Option Spectral Analysis

Computes the EigenAnalysis Spectral estimators spectrum.

FFTn

Standard, Professional, Developer Suite

Computes the complex Fourier transform of the argument.

FourierSpectrum

Standard, Professional, Developer Suite

Computes the windowed Fourier spectrum.

FourierSpectrumUneven

Option Spectral Analysis

Computes the windowed Fourier spectrum for unevenly sampled data.

HarmonicEstimation

Option Spectral Analysis

Estimates the least-squares harmonic components of a signal.

Hilbert

Option Spectral Analysis

Calculates the Hilbert transform. Frequently used for calculating instantaneous amplitude or instantaneous frequency as well as for the demodulation of signals.

IFFTn

Standard, Professional, Developer Suite

Computes the complex inverse Fourier transform of the argument.

IRFFTn

Standard, Professional, Developer Suite

Computes the real inverse Fourier transform of the argument.

MultitaperSpectrum

Option Spectral Analysis

Computes the Slepian or DPSS Multitaper Fourier spectrum.

OctaveAnalysis

Standard, Professional, Developer Suite

Performs an octave analysis for an amplitude spectrum.

OrderTracking

Option Order Tracking

Calculates an order tracking analysis for speed-dependent oscillations. For order tracking, the oscillatory signals measured at a certain speed are subjected to a Fourier transform (FFT). Individual spectral lines whose frequencies correspond to a multiple of the base frequency determined by the speed are then taken from the spectrum.

Periodogram

Standard, Professional, Developer Suite

Computes the segmented-overlapped Fourier spectrum.

SDOFResponse

Option Spectral Analysis

Calculates the responses of individual single-degree-of-freedom (SDOF) systems of the SRS model from the signal of an acceleration sensor.

SRS

Option Spectral Analysis

Calculates one or more shock response spectra (SRS) from the signal of an acceleration sensor.

SRSFromSDOFResponse

Option Spectral Analysis

Calculates the shock response spectrum (SRS) from the responses of the SRS model's individual SDOF systems, which can be calculated using the SDOFResponsefunction.

STFTSpectrum

Standard, Professional, Developer Suite

Computes the Short-Time Fourier Transform (STFT) time-frequency spectrum.

ThirdOctaveAnalysis

Standard, Professional, Developer Suite

Carries out a third octave analysis for an amplitude spectrum.

TransferFunction

Option Spectral Analysis

Computes the transfer function between an input and an output data set.

VarWindow

Option Spectral Analysis

Creates a data taper compatible with a data set.

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