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Harminv - Extracts frequencies and decay rates from a time series

Harminv is a program (and accompanying library) to solve the problem of harmonic inversion. Given a discrete-time, finite-length signal that consists of a sum of finitely-many sinusoids (possibly exponentially decaying) in a given bandwidth, it determines the frequencies, decay constants, amplitudes, and phases of those sinusoids.

Harminv can, in principle, provide much better accuracy than straightforwardly extracting FFT peaks because it assumes a specific form for the signal. (Fourier transforms, in contrast, attempt to represent *any* data as a sum of sinusoidal components.) It is also often more robust than directly least-squares fitting the data (which can have problematic convergence). Harminv employs the "filter diagonalization method" (FDM) of Mandelshtam and Taylor.

Obtaining

Web pagehttp://ab-initio.mit.edu/harminv/
Source tarballhttp://ab-initio.mit.edu/harminv/harminv-1.1.tar.gz
Version 1.1 (stable) released on 2004-05-19
Licensed under The GNU General Public License, Version 2 or later.
This is not a GNU package.

Documentation

User manpage available in HTML format from http://ab-initio.mit.edu/harminv/harminv-man.html
Support contacts

Bug List<stevenj@alum.mit.edu>

Project contacts

Maintainers
Developers

Related information

Interfacescommand line, library
Source languagesC
Supported languagesC, C++
Use requirementsBLAS, LAPACK

Entry information

License verified byJanet Casey <jcasey@gnu.org> on 2004-05-18
Entry compiled byJanet Casey <jcasey@gnu.org>

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