Search Results for "fourier transform"
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Showing 72 open source projects for "fourier transform"
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NFFT
The official NFFT library repository
NFFT is a software library, written in C, for computing non-equispaced fast Fourier transforms and related variations. -
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KACTL
KTH algorithm competition template library
...Instead of reinventing algorithms on the fly during contests like ACM-ICPC or Codeforces rounds, competitors can import exactly the component they need — whether a segment tree with lazy propagation, a minimum cost flow solver, or a fast Fourier transform — and focus their energy on problem logic and strategy. -
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DataFrame
C++ DataFrame for statistical, Financial, and ML analysis
...DataFrame also includes a large collection of analytical algorithms in the form of visitors. These are from basic stats such as Mean, and Std Deviation and return, … to more involved analysis such as Affinity Propagation, Polynomial Fit, and Fast Fourier transform of arbitrary length … including a good collection of trading indicators. You can also easily add your own algorithms. -
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WavTokenizer
SOTA discrete acoustic codec models with 40/75 tokens per second
...Its architecture incorporates a broader vector-quantization space, extended contextual windows, and improved attention networks, combined with multi-scale discriminators and inverse Fourier transform blocks to enhance waveform reconstruction. Extensive experiments show that WavTokenizer matches or surpasses previous neural codecs across speech, music, and general audio on both objective metrics and subjective listening tests. -
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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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rx2fits
HF/VHF spectrosopy code for the rx888mk2 direct-sampling receiver
...This code is for the direct-sampling input of the receiver, which transmits real samples over USB3 at up to 130 MHz sample rate. rx2fits processes these samples to spectral intensities via a Fourier-transform poly-phase filter bank, which provides spectral resolution approaching the spectral bin width with good stop-band and adjacent-channel rejection. Sample rate, Fourier bin count, PFB frame count, integration time and receiver gain parameters can be set. Utilities for device enumeration, firmware upload, display of FITS header, file viewing, and for measuring sample rate and sample statistics are provided. ... -
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FFTW++ is a C++ header class for the FFTW Fast Fourier Transform library that automates memory allocation, alignment, planning, wisdom, and communication on both serial and parallel (OpenMP/MPI) architectures. In 2D and 3D, hybrid dealiasing of convolutions substantially reduces memory usage and computation time. Wrappers for C, Python, and Fortran are included.
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sleef
Vectorized libm
SLEEF stands for SIMD Library for Evaluating Elementary Functions. SLEEF implements vectorized versions of all C99 math functions, that utilize SIMD instructions of modern processors to make computation more efficient. The library also includes vectorized DFT subroutines. -
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GraceGTK
Draw curves, colored 2D maps with CAD capabilities
GraceGTK features: Import numerical data to draw curves or colored 2D maps with level contour lines Transform data (Fourier, wavelets), apply filters, fit curves Interactive GUI with CAD capabilities to add drawings Commands interpreter to automate work More details in Files/doc/GraceGTK.pdf file GraceGTK was forked from grace-5.1.22 in 2009. The enhanced commands interpreter has an ascending compatibility with old Grace scripts. -
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LMath library
Math library for Free Pascal and Lazarus.
...LMath provides routines and demo programs for numerical analysis, including mathematical functions, probabilities, matrices, optimization, linear and nonlinear equations, integration, Fast Fourier Transform, random numbers, curve fitting, statistics and graphics. It is organized s set of lazarus packages which makes it easily extensible and helps to include only really needed features in your project. -
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SpectralWorks
View, manipulate, analyze (LS fit, SVD, FT), and make figs of, spectra
...Simple arithmetic includes making linear combinations of up to 10 spectra. Advanced functions include fitting spectra as LC of standard basis spectra, singular value decomposition, Fourier transform, differentiation, integration, global fitting of 3D titration and kinetic data. Graphics features allow composing Figures and export to postscript files which can be converted to pdf, imported into PhotoShop for rasterization, or used in page design software like Illustrator. -
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Image Augment Generator
Dataset Image Augmentation Generator is a desktop application
...Key Feature: 30 Augmentation Techniques 1. Geometric Transformations: Rotation (-3° to +3°), Horizontal/Vertical Flip, Random Shear, Zoom, Translation, Perspective Transform 2. Noise & Blur: Gaussian Noise, Salt & Pepper Noise, Motion Blur, Gaussian Blur 3. Color Adjustments: Brightness, Contrast, Color Jitter, Gamma Correction, Channel Shuffle, Posterize 4. Advanced Techniques: Elastic Deformation, Cutout, CLAHE, Edge Enhancement, Histogram Equalization, Fourier Noise 5. Deep Learning Methods: Mixup, CutMix, Random Occlusion Target Audience 1. ... -
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lms2fits
Dual-channel spectroscopic receiver using LimeSDR-USB
`lms2fits` is a dual-channel spectroscopic receiver for radio astronomy that employs theLimeSDR's LimeSDR-USB dual-channel transceiver, which in turn employs Lime Microsystems' LMS7002M transceiver chip. These systems allow a frequency-agile (<30 MHz to 3.8 GHz) receiver providing Stokes parameters in dynamic spectra of up to 60 MHz analog bandwidth streamed to a FITS file with three-axis primary table. It runs on linux under .Net. -
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C++ FFT
C++ radix 2 & 3 multi-dimension complex FFT & graphical test program
This C++ code does radix 2 & 3 multi-dimension (any) complex FFT and its inverse. Array dimensions with sizes that are not 2^m 3^n are automatically zero-padded to the nearest larger size integer of the form 2^m 3^n. The new array has the original data centered, except when a dimension size is increased by an odd number, the zero padding on the left is one less than the zero padding on the right. This FFT code is in is own namespace and is in one source file and one include file. There is... -
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FFTW_Ada
An Ada 2012 binding to the FFTW fast Fourier transform library
FFTW_Ada is an Ada binding to the FFTW (fast Fourier transform) library written at MIT by Matteo Frigo and Steven G. Johnson. FFTW is written in C. FFTW_Ada allows calls to FFTW from an Ada program, thus allowing Ada code to compute fast Fourier and certain other related transforms. FFTW_Ada v2 works with FFTW v3 and requires Ada 2012. -
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libdspl-2.0
libdspl-2.0 is opensource cross-platform digital signal processing alg
libdspl-2.0 — opensource cross-platform digital signal processing algorithm library, written in C language. Distributed under LGPL v3 license. This allows to use this library in all applications with dynamic linking. -
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Description and detailed explanation on Fourier Transform, some FFT, LPC etc. Runable project demonstrates DCT transform on continuous audio, show and edit audio source with different zooming and view.
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radio_vocoder_FFT
a vocoder + equalizer + FFT effects version of radio_chung
radio vocoder chung is a vocoder + linear equalizer(s) + FFT effect(s) version of radio chung free internet web radio stream url and audio file generic path player ( * ,mp3,*name*.ogg,wav,...) with dsp(s) (baxandall , resonance , automod , decay , flat , noisered , speed , feedback ) using bass.dll , gui_chung , FFTdll.dll fft fast fourier transform and freebasic .high quality small pitch shift shifting for radio url . added record, playrec, save as MP3 , feedback , anticlick . -
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resonance_chung free VST plugin effect
piano like variable dynamic reverb
resonance chung is a free gpl open source VST plugin variable dynamic reverb sound effect compatible with VST steinberg, fb_chungVST , midipiano_chung , freemp3_chung , dsp_chung , radio _chung music plugins support. It aims to simulate the increase of reverberation with the number of played notes like in a real acoustic piano . a quick fft small fourier transform is used to estimate a number of played notes and modify the reverb rate in real time. Is written in easy fast freebasic . -
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DarkF
DarkF is an FFT optical simulation code for GW inteferometers
...Beams and mirrors are sampled on a grid of coordinates (x; y) and the DarkF resolution is depending on the grid size and on the sampling rate (typically a size of 0.6m (larger than a mirror) and a sampling rate of 256*256). With the Fourier transform method, it is easy to obtain a propagated beam and we can use this code to simulate a simple or a complex system as a Fabry Perot cavity or Advanced detector, like Advanced Virgo, Advanced LIGO or Kagra. It can include reflection and transmission maps from measurements or real mirrors. -
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smib is one of the smallest and simplest computer algebra system in the world, but simple does not mean simplistic. Using smib you can explore many branches of mathematics (e.g. number theory, algebra, calculus, numerical analysis, differential geometry, probability and stochastic calculus) and also some physics (e.g. electromagnetism and quantum mechanics).. By simple you can understand easy to program (smib is a dynamically typed language, with strong affinity to recursivity, programs...
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vocoder chung is a small educational vocoder using discrete fourier transform FFT spectrum written in easy fast compiled freebasic . (24/12/2019) uses fast and accurate FFTdll.dll (28/03/2020) algorythmic voice cloning / change / morphing experiment added
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VStar
Multi-platform Variable Star Visualisation and Analysis
VStar is a multi-platform, easy-to-use variable star observation visualisation and analysis tool. Data can be read from a file or the AAVSO database, light curves and phase plots created, period analysis performed, and filters applied. Plugins can be developed, e.g. to make additional observation sources available. See also: 1. http://www.aavso.org/vstar-overview 2. http://www.aavso.org/forums/about-aavso/vstar 3. http://dbenn.wordpress.com/category/astronomy-science/vstar 4.... -
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DSP Lab
Digital Signal Processing Simulation
DSP Lab is a digital signal processing simulation application created to simulate and visualize process of sampling and filtering analog signal using DSP system. This application is created to provide as a tool for educator and student to visualize and understand DSP system. Source code is available at https://payhip.com/b/9mPY -
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Satsuma
Whole-genome synteny alignments
Satsuma is a whole-genome synteny aligner based on the Fast Fourier Transform and a battleship-style search. Parallelization is built-in. Grabherr, M. G., Russell, P., Meyer, M., Mauceli, E., Alföldi, J., Di Palma, F., & Lindblad-Toh, K. (2010). Genome-wide synteny through highly sensitive sequence alignment: Satsuma. Bioinformatics, 26(9), 1145-51. For more information, documentation and recent activity, please check out our project web page: http://satsuma.sourceforge.net/
