Search Results for "fourier" - Page 3
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Showing 105 open source projects for "fourier"
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A smorgasbord of C++ functions, classes and templates which are related to mathematics and might prove useful, e.g. DBSCAN clustering, Householder tridiagonalization, Eigenvalues and Eigenvectors of real symmetric matrices, Minimization, Fourier Transformation ...
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FFTL
Templated Fast Fourier Transform in C++
Now moved to GitHub: https://github.com/CoreyShay/FFTL Provides some relatively easier to use than normal templated FFT classes written in C++. This is currently still a work in progress, but the FFT portion (complex and real) both output the correct results, and the code executes very quickly, around only 30% or so slower than the much more difficult to compile FFTW on SSE enabled platforms. Though optimized code only runs on SSE (x86) based platforms, it's a very simple matter to port the... -
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High Speed Image Analysis for MATLAB
An integrated toolbox for MATLAB analysis of high-speed video
High-speed imaging is a powerful tool for capturing fast events, but converting qualitative video observations to quantitative analysis is challenging. This toolbox is being developed to support analysis of high-speed video in Hall thrusters and other plasma devices. In particular, it enables visualization and Fourier analysis of rotating spoke instabilities in the annular Hall thruster discharge channel. We currently have two developers but are always open to more. Feedback is also... -
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KL1p
A portable C++ library for Compressed Sensing
KL1p is a portable C++ framework for handling sparse recovery of inverse problems of underdetermined linear systems, like in compressed sensing technique. -
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kernel_smoother
Binned Kernel Density Estimate via FFTW
The library implements multivariate kernel density estimates via fast fourier transform from http://www.fftw.org/ The main code is used for constructing jet templates for computing data-driven jet substructure estimate for QCD backgrounds. -
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Fast Matrix for Java
General purpose matrix utilities for Java in Parallel Computing
Fast Matrix for Java (fm4j) is a general-purpose matrix utility library for computing with dense matrices. fm4j encapsulated different underlying implementations and select the optimal one in run-time depending on the size of the input matrix. Moreover, fm4j employs Java (Tm) Concurrency to take advantage of the computation power of multi-cor processors. -
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paraffin
Iterative and recursive parallelism generics for Ada 2005 and Ada 2012
A suite of Ada 2012 generics to facilitate iterative and recursive parallelism for multicore systems and provide safer recursion for single and multicore systems. Generics include Ravenscar compatible versions for real-time systems. Also Includes paraffinalia, which is a set of useful generics for parallel quicksort, fast fourier transform, function integration, prefix sum, and Red-Black trees -
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Bugs
SW for HTP analysis of 3D trajectories of microorganisms
Fortran and shell-level programs originally designed for the analysis of quasi-helical trajectories of Toxoplasma gondii through Matrigel media, acquired by 3D microscopy and digitized by Imaris tracking sw, as published in [TBA]. Key sw components include a singular-value-decomposition (SVD) approach to fitting a modified Fourier series to noisy 3D coordinates measured at irregular time intervals (incorporating cross-validation for determining optimum Fourier order); correction... -
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X-Freq
X-Ray Reflectivity Frequency Analysis
Analyze the thicknesses of a sample from an x-ray reflectivity dataset using Fourier Transform techniques. -
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StFFT
FFT on Structured text
Fast fourier transform algorithm written on IEC-61131-3 Structured text programming language for programmable logic controllers. Algorithm is split-radix FFT. StFFT is iterative contrary to more common recursive approach. Iterative solution was chosen because PLCs don't have support for recursion. For compatibility with as many as possible PLC models, algorithm have dependency only on sine and cosine functions. Dual licenced under LGPL and Commercial licence. For commercial licencing contact... -
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QRealFourier
Qt-based FFT implementation
A Qt library for Fast Fourier Transform (FFT) of real samples. Based on the FFTReal library. -
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AgED
AgED - Analysis given Experimental Data
AgED performs automatic feature extraction from your image data and allows for their visualization and management. AgED relies on Elliptic Fourier Transcriptors to extract features from large quantities of image data. These features can then be visualized and you can evaluate them in a statistical manner. This type of analysis is particularly worthwile in the assessment of biological experiments. Elliptic Fourier Descriptors have been applied in a large range of applications in biology... -
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This program is intended as an educational tool to explain the concept of Discrete Fourier Transform (DFT). It uses the Fast Fourier Transform to calculate the DFT of a given arbitrary time domain signal and plots it graphically.
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tiny-DSP library
small and fast library dealing with signal processing
Tiny-DSP library contains c sources of a fast, tiny, portable and generic FFT (Fast Fourier transform) and inverse FFT. Supported are all power of two sizes (like 2,4,8,16,32,...) for one and two dimensional floating point arrays. -
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Fast Solver for Potential and LFFFs
This is a fast solver for global potential field in the Solar Corona
... is transformed into Fourier spectral space and the resulted 2D equations in r–θ plane for the Fourier coefficients are solved by finite difference in a direct way. The solver shows a distinguish virtue of extremely fast computing speed, e.g., the computation for a magnetogram with resolution of 180(θ) × 360(φ) is completed by only less than two seconds and even on a very high resolution 600 × 1200, the solution can be obtained within about one minute on a single 2.66G CPU. -
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Short Term Fourier Transform takes an audio file as input and displays the Time Frame vs Fourier spectrum. Users can set Frame/window length, two sided/one sided spectrum, and the horizontal and vertical scaling of the plots.
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Pw.mac is an enhancement to Maxima, so you will have to get Maxima. Pw.mac enables Maxima to handle integration, differentiation, computation of products, sums and powers, plotting, transforming and simplifying piecewise continuous functions.
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ShiVaSmiles
A slick interface to see various scale analysis algorithms in action.
The Shape Visualizer is intented to be an exploratory/educational tool making it quick and easy to see how various mathematical methods perform in analysing and selecting the various patterns present on an image. The main website is built as a wiki gathering info and examples on the various implemented algorithms. The combination of the application and its wiki intend to constitute a nice little pedagogic toolkit for multiscale analysis. Feel free to contribute code or wiki content ! -
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An implementation of the sparse FFT algorithms discovered by Mark Iwen and described in http://www.math.duke.edu/~markiwen/DukePage/Papers/JcFFTsubmit.pdf. Used for benchmarking in http://www.ima.umn.edu/preprints/jul2010/2326.pdf.
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FFTW
Fast Fourier Transform Library (FFTW)
A C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions, of arbitrary input size, and of both real and complex data. -
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mp3decoder
Mp3 decoder to convert mp3 files into wav on Linux, Windows, Android
Mp3 decoder to convert mp3 files into wav file. Works well on Linux, Windows and Android. Can perform fast fourier transforms on decoded audio data. Under research & development by WeaveBytes -
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These will be java based open source voice control player . These player can be controled by the uer voice .It can help thoushand of blind and physicaaly challanged person to enjoy the benifits of the music . And help in its development .
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A low memory scaling distributed 3D FFT library. The library is designed for calculating complex‐to‐complex Fast Fourier Transforms (FFT’s) on 3‐D distributed data. It is based on FORTRAN90 and MPI with the underlying FFT calculated using FFTW3.
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Program that does an FFT (Fast Fourier Transformation) algorithm on a 1 dimensional time buffer read from a file. It will display graphically.
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Online Guitar Tuner java applet which analyse your microphone or any other sound input to find fundamental frequency using a Fast Fourier Transform. Classical "Vintage" design looking like real guitar tuners.