Frequency Domain

The Fourier transform takes a signal in the time domain and maps it, without loss of information, into the frequency domain. The frequency domain representation is exactly the same signal, in a different form. The inverse Fourier transform(IDFT) maps the signal back from the frequency domain into... Platforms: Matlab

Sculptor is a phase-vocoder-based package with real-time capabilites. You can use it to fiddle with soundfiles in the frequency domain, changing pitch and duration independently. Platforms: *nix

AD Sound Tools is a real-time software that provides effective use of your PC sound devices. It includes a signal generator, a recorder, two oscilloscopes and two spectrum analyzers. The program allows to control your recording device in time and frequency domains, record a signal to WAV file and... Platforms: Windows, Windows 7

The Analysis & Reconstruction Sound Engine also known as ARSE, is a program that analyses a sound file into a spectrogram and is able to synthetise this spectrogram, or any other user-created image, back into a sound. The ARSE consists in two main parts, a spectrographer with a base-2... Platforms: *nix

ViPEC is a powerful tool for the analysis of high frequency, linear electrical networks. It takes a schematic description of the electrical network and performs a linear analysis in the frequency domain. The output is in the form of port parameters (S, Y or Z) with results presented on a user... Platforms: *nix

A Simulink model that generates and displays a simple cosine wave. The model computes the cosine function using the continuous phase method, which is based on Euler's formula for the complex exponential. The cosine generator is provided as a subsystem, which the user can copy-and-paste into other... Platforms: Matlab

This submission was created by Valery Tchkalov and Steve Miller to help engineers understand parameterization of hydraulic valves. The included white paper, simulation models, and MATLAB scripts cover the structure of a valve model, examples of how to use optimization algorithms to tune your... Platforms: Matlab

I've made this GUI for a couple of my students, which were learning the Gabor Filtering, and had hard a time to understand the subject. This helped them to get some intuition about what Gabor Filtering is, what are its benefits and what are its uses.The GUI allows you to play with Gabor filters... Platforms: Matlab

MR Noise is a broadband noise reduction processor. It distinguishes itself by being both great sounding and incredibly easy to use. Like most noise reduction systems, MR noise works in the frequency domain, and requires that the noise spectrum be learned before noise reduction can commence. If... Platforms: Mac

The stock market has different cycles, such as, four-year presidential cycle, fiscal reporting cycles. In addition, some cycles are defined by intrinsic characteristic properties of the system. The stock market performance curve can be considered as a sum of the cyclical functions with different... Platforms: Windows

GFourier can help you use Fourier Analysis for image restoration. GFourier calculates the Fourier Transform of a given image and allows the use of filters in the frequency domain. The Inverse Fourier Transform is then used to substitute original image.. Get GFourier at SourceForge.net. Fast,... Platforms: *nix

FIR Coefficient Finder is a digital signal processing tool which quickly generates floating point and fixed point coefficients for Finite Impulse Response filters. Supported filter types include low pass, high pass, band pass, notch, raised cosine, and root raised cosine. Generation methods... Platforms: Mac

IT++ is a C++ library of mathematical, signal processing and communication routines IT++ is a C++ library of mathematical, signal processing and communication classes and functions. Its main use is in simulation of communication systems and for performing research in the area of... Platforms: Windows, Mac, Linux

JMCAD is an program for the modeling and simulation of complex dynamic systems. This includes the ability to construct and simulate block diagrams. The visual block diagram interface offers a simple method for constructing, modifying and maintaining complex system models. The simulation engine... Platforms: Windows

It can do many things, but it's main feature serves as an ultramodern hi-tech replacement for multiband compressors and loudness maximizers. With top-class features such as custom shape processing it can provide you with a varied and wide range of effects. Additionally, it provides you with a... Platforms: Windows

It can do many things, but it's main feature serves as an ultramodern hi-tech replacement for multiband compressors and loudness maximizers. With top-class features such as custom shape processing it can provide you with a varied and wide range of effects. Additionally, it provides you with a... Platforms: Mac

It can do many things, but it's main feature serves as an ultramodern hi-tech replacement for multiband compressors and loudness maximizers. With top-class features such as custom shape processing it can provide you with a varied and wide range of effects. Additionally, it provides you with a... Platforms: Windows

Photosounder is a one-of-a-kind image-sound editing program. It is unique in that it opens images and sounds indiscriminately, treats and processes them as images, and synthesizes them as sounds. Sounds, once turned into images, can be powerfully modified to achieve effects and results that... Platforms: Mac

PicoScope is a comprehensive software application for Pico Technology PC Oscilloscopes. Used with a scope device from Pico Technology, it creates a virtual oscilloscope, spectrum analyser and multimeter on your PC. PicoScope 6 supports the following scope devices: PicoScope 6000 Series PicoScope... Platforms: Windows

Fourier Transform Lab Student Edition is an advanced application designed for performing Fourier transformations, which can be useful in teaching Crystallography, since they are related to Optical Transforms (e.g. laser diffraction patterns). Furthermore one may get a quick hands-on experience... Platforms: Windows