Freeware Listing: Spectral Estimation

Find best Spectral Estimation Method for a Power Spectral Density plot. A menu of 10+ spectral estimators from Steve Kay's textbook 'Modern Spectral Estimation' 1988 is available to choose from. The results differ dramatically from one estimator to another. Plus, varying input parameters and/or number of points may provide discrepancies. See how zero padding effects your results. Manufacturing companies take note! Some estimators can detect signals 50 to 100 dB from main signal. See documented example! The unwritten rule of '30 dB is okay' (i.e. hidden) is no longer true.

  • Platform: Win2000, Windows CE, Windows Server, Windows Vista, WinOther

Which estimator is best for your job? Helps Find best Spectral Estimation Method for a Power Spectral Density plot. A menu of 10+ spectral estimators from Steve Kay's textbook 'Modern Spectral Estimation' 1988 is available to choose from. The results differ dramatically from one estimator to another. Plus, varying input parameters and/or number of points may provide discrepancies. Observe how zero padding effects your results. Manufacturing companies take note! Some estimators can detect signals 50 to 100 dB from main signal. See documented example! The unwritten rule of '30 dB is okay' (i.

  • Platform: Win2000, WinXP, Win7 x32, Win7 x64, Windows 8, Windows RT, WinServer, WinOther, WinVista, WinVista x64

SpectrumSolvers will offer users the possibility to calculate a Power Spectral Density (PSD) estimate based on 1 of several Steve Kay's Estimators.

SpectrumSolvers has a menu of Spectral estimators from Steve Kay's textbook, titled "Modern Spectral Estimation", 1988. The results differ dramatically from one estimator to another. Plus, varying input parameter(s) and/or number of points may show discrepancies.

Estimation methods in SpectrumSolvers include Autocorrelation, Covariance, Prony, Akaike, Burg, Recursive Maximum Likelihood Estimation, Modified Yule-Walker Equations and others.

  • Platform: WinOther

The two-step noise reduction (TSNR) technique removes the annoying reverberation effect while maintaining the benefits of the decision-directed approach. However, classic short-time noise reduction techniques, including TSNR, introduce harmonic distortion in the enhanced speech. To overcome this problem, a method called harmonic regeneration noise reduction (HRNR) is implemented in order to refine the a priori SNR used to compute a spectral gain able to preserve the speech harmonics as proposed by Plapous et al. ("Improved Signal-to-Noise Ratio Estimation for Speech Enhancement", IEEE Transactions on ASLP, Vol.

  • Platform: Matlab, Scripts

The comb pilot aided channel estimation in ofdm modulation is considered. The power of pilot subchannels is under the control. The data experience frequency selective channel then the AWGN noise is added to make the situation worse. The bit error rate is ploted versus SNR..

  • Platform: Matlab, Scripts

Spectral Subtraction method proposed by berouti for enhancement of noisy speech signals..

  • Platform: Matlab, Scripts

FilerMaskFigure.m overlays a spectral mask on a filter's magnitude response. It will print a PASS or FAIL indication on the final plot..

  • Platform: Matlab, Scripts

This is a scaled down easy version of the state estimation module that is run in energy control centres. It has the following features: (1) option to enter the weights for your measures (2) an implementation of the weighted least square estimation features missing: (1) bad data recognition.

  • Platform: Matlab, Scripts

Calculate the dynamic stiffness using spectral element for a beam in space.

  • Platform: Matlab, Scripts

Spectral Conquest is a handy and reliable audio plugin designed to provide possibilities to control and modify audio frequency spectrums.

It manages to analyze the input signal via a Fast Fourier Transform (FFT), regenerating the output using an inverse FFT. Users can modify the spectrum in between.

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  • Platform: WinOther

Spectral Mathematics is a NET library designed to allow generic arithmetics through the use of IL.

The Spectral.Operations assembly has methods which are rewritten after compilation. The majority of the types in this library are implemented as structs

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  • Platform: WinOther

Mass Estimation was created as an open source MATLAB package that includes one-dimensional mass estimation.

Mass Estimation also comes included with a Half-Space Tree based multi-dimensional mass estimation.


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  • Platform: WinOther

Spectral Python, also know as SPy is built as an Open Source Python package for reading, viewing, manipulating, and classifying hyperspectral image data.

SPy includes functions for clustering, dimensionality reduction, supervised classification, and more.

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  • Platform: WinOther

This is a small application written in Java that allows you to calculate the spectral curve of a polygon.

It has a very simple and intuitive interface that allows you to quickly make the adjustments you need. for WindowsAll

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  • Platform: WinOther

The software system solves constrained nonlinear parameter estimation problems. Synonyms are data fitting, nonlinear regression, parameter identification, curve and surface fitting. The numerical methods are based on highly efficient Gauss-Newton-SQP algorithms. Model functions are defined in a modeling language called PCOMP and are interpreted and evaluated during runtime.

General: Arbitrary fitting criteria depending on parameters to be estimated, additional nonlinear equality or inequality constraints, and optionally on a second independent model variable

Numerical routines: Gauss-Newton-type SQP methods, automatic differentiation, alternative norms (sum of absolute values, maximum of absolute values), confidence intervals for estimated parameters, correlation and covariance matrix, identification of significance...

  • Platform: WinOther, WinVista

The filter performs motion estimation and compensation in a video stream. It allows to show macroblocks' partition and motion vectors as well. The performance of the filter can be configured setting parameters in a dialog box. The filter also supports job control, which allows to use it in the AviSynth utility. VirtualDub MSU Motion Estimation Filter..

  • Platform: Win2000, Windows Server, WinOther

The 'BandSystem' spectral analysis system is a rule-based system for the classification of mineral spectra. It consists of a preprocessor, a featureextractor, and a rule-based system to identify minerals from infra-red reflectance spectra..

  • Platform: Linux, Unix, WinOther

A graphical MatLab framework for estimating the parameters of, modeling and simulating static and dynamic linear and polynomial systems in the errors-in-variables context with the intent of comparing various estimation strategies..

  • Platform: WinOther

A MATLAB spectral clustering package to handle large data sets (200,000 RCV1 data) on a 4GB memory general machine. We implement various ways of approximating the dense similarity matrix, including nearest neighbors and the Nystrom method..

  • Platform: Mac OS X, Unix, WinOther

Parallel Spectral Deconvolution is a multithreaded ImageJ plugin for spectral image deblurring..

  • Platform: Linux, Mac OS X, WinOther

Spectral Estimation: Freeware | All

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