Harminv 1.3.1

Version: 1.3.1

Downloads:0

Hits:662

SourceNO

Link Broken:Report It!

Package:Without source

Price:$0

More info Download

Description

Harminv is a free 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.It can, in principle, provide much better accuracy than straightforwardly extracting FFT peaks, essentially because it assumes a specific form for the signal. (Fourier transforms, in contrast, attempt to represent any data as a sum of sinusoidal components, and are thus limited by the uncertainty principle.) It is also often more robust than directly least-squares fitting the data (which can have problematic convergence), since it re-expresses the problem in terms of simply finding the eigenvalues of a small matrix.This kind of spectral analysis has wide applications in many areas of physics and engineering, as well as other fields. For example, it could be used to extract the vibrational or "eigen" modes of a system from its response to some stimulus, and also their rates of decay in dissipative systems. FDM has been applied to analyze, e.g., NMR experimental data. It is especially appropriate for analyzing numerical simulations, e.g. of quantum mechanics or classical electromagnetism. In general, it is useful when you know on physical grounds that your system consists of a small number of decaying & oscillating modes in the bandwidth of interest, plus a limited amount of noise, and is not appropriate to analyze completely arbitrary waveforms.

Language: C/C++

Related:

Harmonic Inversion - Mechanics - Numerical - Numerical Simulations - Quantum - Quantum Mechanics

User Reviews:

Write Review *
Your name *
Email *
(Your comments will be reviewed by our staff before they are posted)
Rate this product *
Captcha Image
Enter code from image *

 

Related:

BRL-CAD package 7.10.0

The BRL-CAD package is a powerful Constructive Solid Geometry (CSG) solid modeling system with over 20 years development and production use by the U.

By: Brlcad Homepage

Freeware

GNU Archimedes 0.0.7

GNU Archimedes is the GNU package for the design and simulation of submicron semiconductor devices.

By: ftp.gnu.org Homepage

Freeware

gdpc 2.2.4

gdpc is a program for visualising molecular dynamic simulations.

By: frantz.fi Homepage

Freeware

GDIS 0.12.5

GDIS is a GTK based program for the display and manipulation of isolated molecules and periodic systems.

By: Gdis Homepage

Freeware

GNU Scientific Library 1.9

The GNU Scientific Library (GSL) is a numerical library for C and C programmers.

By: ftp.gnu.org Homepage

Freeware

Quantum Toolkit 0.30

Quantum Mechanical Toolkit And 3D Viewer for C++.

By: Qcplusplus Homepage

Freeware

Numerical Model Compiler 1.0

A framework for generation of real-time numerical simulations of dynamical systems from differential and difference equations.

By: Numc Homepage

Freeware

Quantum Database Utility 1.0

Quantum is a database plugin for Eclipse (needs GEF, Point Eclipse at http://quantum.

By: Quantum Homepage

Freeware

QGIS GDAL Plugin 1.0

This is a GDAL Plugin for Quantum GIS.

By: Qgisgdalplugin Homepage

Freeware

QuantumLog 1.0

Quantum Chemistry packets calculation analiser.

By: Quantumlog Homepage

Freeware