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Harminv
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.
Last updated 7 Jan, 2008
About
Leadership
- Steven G. Johnson - Maintainer
Requirements
- BLAS (Use Requirement)
- LAPACK (Use Requirement)
Versions
1.2.1
1.2.1 stable released 2004-05-20
- Released: 20 May, 2004
- Code Maturity: Stable
- Source Archive: http://ab-initio.mit.edu/harminv/harminv-1.2.1....
- Licenses: GPLv2orlater
- Interfaces: Command Line, Library
User Community and Support
User manpage available in HTML format from http://ab-initio.mit.edu/harminv/harminv-man.html