Harminv
Harminv
http://ab-initio.mit.edu/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.
Documentation
User manpage available in HTML format from http://ab-initio.mit.edu/harminv/harminv-man.html
Licensing
| License | Verified by | Verified on | Notes |
|---|---|---|---|
| GPLv2orlater | Janet Casey | 18 May 2004 |
Leaders and contributors
| Contact(s) | Role |
|---|---|
 Steven G. Johnson | Maintainer |
Resources and communication
| Audience | Resource type | URI |
|---|---|---|
| Bug Tracking,Developer,Support | mailto:stevenj@alum.mit.edu |
Software prerequisites
| Kind | Description |
|---|---|
| Required to use | LAPACK |
| Required to use | BLAS |
This entry (in part or in whole) was last reviewed on 7 January 2008.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.
The copyright and license notices on this page only apply to the text on this page. Any software described in this text has its own copyright notice and license, which can usually be found in the distribution itself.