InstantaneousFrequency


Analytic signal produced by <code><a rd-options="" href="/link/HilbertTransform?package=hht&version=2.1.3" data-mini-rdoc="hht::HilbertTransform">HilbertTransform</a></code>


asig


How the instantaneous frequency is calculated. 
<code>"arctan"</code> uses the arctangent of the real and imaginary parts of the Hilbert transform, taking the numerical derivative of phase for frequency.
<code>"chain"</code> uses the analytical derivative of the arctangent function prior to performing the numerical calculation.


method


  Differentiation lag, see the <code>diff</code> function in the <code>base</code> package.



Calculates instantaneous frequency from an analytic signal.


Builds on the EMD package to provide additional tools for empirical mode decomposition (EMD) and Hilbert spectral analysis. It also implements the ensemble empirical decomposition (EEMD) and the complete ensemble empirical mode decomposition (CEEMD) methods to avoid mode mixing and intermittency problems found in EMD analysis.  The package comes with several plotting methods that can be used to view intrinsic mode functions, the HHT spectrum, and the Fourier spectrum.

InstantaneousFrequency: Derive instantaneous frequency

Description

Usage

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Value

See Also