Freeware Downloads for "Power Spectral Density"
- Vibration Response Spectrum
- License: Freeware

This program calculates the Vibration Response Spectrum (VRS) for a base input Power Spectral Density (PSD). The base input PSD must be in terms of acceleration. The VRS uses point-by-point multiplication of the transmissibility function times the base input PSD. It is thus more accurate than Miles equation..
- Platform: Matlab, Scripts
- Publisher: Tom Irvine
- Date: 20-02-2013
- Size: 10 KB
- Rainbow
- License: Freeware

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.
- Platform: Windows
- Publisher: Optimal Designs Enterprise
- Date: 24-09-2008
- Size: 1325 KB
- SpectrumSolvers
- License: Freeware

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.
- Platform: Windows
- Publisher: Optimal Designs Enterprise
- Date: 15-06-2015
- Size: 3270 KB
- Harma Syllable Segmentation
- License: Freeware

HARMASYLLABLESEG - Segments a signal stored in a WAV file into individual syllables. Also graphs the spectrogram and signal with syllables highlighted in red to show what parts of the signal contain syllables. INPUT: - FILENAME: The path to a signal stored in WAV format. The following arguments are used by the spectrogram function type: 'help spectrogram' for more information on WINDOW,NOVERLAP, and NFFT - WINDOW: Either an integer value N or coefficients of a Window function stored in a length N matrix.
- Platform: Matlab, Scripts
- Publisher: Michael Lindemuth
- Date: 24-04-2013
- Size: 10 KB
- Power Spectral Density
- License: Freeware

This script calculates the PSD of a time history. It prompts the user for parameters related to the spectral resolution and the number of statistical-degrees-of-freedom..
- Platform: Matlab, Scripts
- Publisher: Tom Irvine
- Date: 19-06-2013
- Size: 10 KB
- Baseband numeric transmission
- License: Freeware

This script is intended to illustrate the concepts of eyediagramm, constellation, ISI and to understand the effects of additive noise power, channel frequency band restriction, number of possible states within a symbol period, affecting the quality of the transmission. Three methods are employed for low-pass filtering: - classical low pass filter (actually two order Butterworth) creating ISI. - raised cosine filter in order to illustrate the possibility of suppress ISI . - Pseudo filtering by increasing risetime and falltime of ideal rawcode .
- Platform: Matlab, Scripts
- Publisher: Alain Demange
- Date: 06-03-2013
- Size: 51 KB
- Power Spectral Density Integration
- License: Freeware

This program calcultes the overall GRMS for a PSD function. It also calculates the overall velocity and displacement values..
- Platform: Matlab, Scripts
- Publisher: Tom Irvine
- Date: 17-05-2013
- Size: 10 KB
- Digital Communication -1
- License: Freeware

This ultimate free unique application is for all students across the world. It covers 147 topics of Digital communication in detail. These 147 topics are divided in 5 units.
Each topic is around 600 words and is complete with diagrams, equations and other forms of graphical representations along with simple text explaining the concept in detail.
This USP of this application is "ultra-portability". Students can access the content on-the-go from anywhere they like.
Basically, each topic is like a detailed flash card and will make the lives of students simpler and easier.
- Platform: Android 2.x, Android 3.x, Android 4.4, Android 4.x
- Publisher: faadooengineers.com
- Date: 10-05-2014
- Size: 3174 KB
- Digital Signal Analysis
- License: Freeware

Fourier Transform is one of the basic tools to analysis a large scale of problems related to time-series analysis.
There are very few free open source software which can be use in any platform for Fourier Transform and Power Spectral analysis with simple input and output. This tool can only be used by click of mouse i.e. user need not to learn Matlab or R only for Fourier Transform. Here in this tool Fast Fourier Transform (FFT) is implemented with various window function for Power spectrum analysis.
- Platform: WinOther
- Publisher: Rishi Das Roy
- Date:
- Size: 1546 KB
- Spek for Windows
- License: Freeware

Spek (IPA: /spdOOC*k/, d-de?bacon' in Dutch) helps to analyse your audio files by showing their spectrogram. Spek is free software available for Windows
Features:
Supports all popular lossy and lossless audio file formats thanks to the FFmpeg libraries.
Ultra-fast signal processing, uses multiple threads to further speed up the analysis.
High number of frequency bands for the best spectrogram quality.
Shows the codec name and the audio signal parameters.
Allows to save the spectrogram as an image file.
- Platform: WinOther
- Publisher: Alexander Kojevnikov
- Date:
- Size: 9093 KB
- APE Optics Calculator
- License: Freeware

The A·P·E Calculator helps to easily evaluate often needed (non)linear equations. This includes Sum Frequency Generation (SFG), Difference Frequency Generation (DFG), the wavelength relations in an optical parametric oscillator (OPO) as well as in coherent anti-Stokes Raman scattering (CARS) spectroscopy.
The conversion between wavelength, wavenumber, and frequency as well as different characterizations of pulses can be calculated.
Feedback as well as feature requests are appreciated.
Keywords: nonlinear optics, ultrafast optics, wavelength, wavenumber, SFM, OPO, DFG, CARS, frequency, bandwidth, peak, average, power, energy, density, conversion, pulse width, laser, physics, dispersion, light, ape, berlin, autocorrelator, spectrometer, spectroscopy, spectrometry, microscopy, sgh, thg, fhg, mode locker, frequency shifter,...
- Platform: Android 1.x, Android 2.x, Android 3.x, Android 4.4, Android 4.x
- Publisher: Stefan Popien
- Date: 11-05-2014
- Size: 275 KB
- Continuous Morlet Wavelet Transform
- License: Freeware

This article consists of a brief discussion of the energy density over time or frequency that is obtained with the wavelet transform. Also an efficient algorithm is suggested to calculate the continuous transform with the Morlet wavelet. The energy values of the Wavelet transform are compared with the power spectrum of the Fourier transform. Useful definitions for power spectra are given. The focus of the work is on simple measures to evaluate the transform with the Morlet wavelet in an efficient way.
- Platform: Matlab, Scripts
- Publisher: Richard
- Date: 08-01-2013
- Size: 10 KB
- ARMAsel for Irregular or Missing Data
- License: Freeware

Accurate estimates of the autocorrelation function or the power spectrum can be obtained with a parametric model (AR, MA or ARMA). With automatic inference, not only the model parameters but also the model structure are determined from the given data. It is assumed that the ARMASA and the Automatic Spectral Analysis toolboxes are present..
- Platform: Matlab, Scripts
- Publisher: Piet M T Broersen
- Date: 09-04-2013
- Size: 31 KB
- EZFFT : An easy to use Power Spectrum (FFT)
- License: Freeware

EZFFT(T,U) plots the power spectrum of the signal U(T) , where T is a 'time' and U is a real signal (T can be considered as a space coordinate as well). If T is a scalar, then it is interpreted as the 'sampling time' of the signal U. If T is a vector, then it is interpreted as the 'time' itself. In this latter case, T must be equally spaced (as obtained by LINSPACE for instance), and it must have the same length as U. If T is not specified, then a 'sampling time' of unity (1 second for instance) is taken.
- Platform: Matlab, Scripts
- Publisher: Frederic Moisy
- Date: 01-06-2013
- Size: 10 KB
- Pump power and specific speed
- License: Freeware

Calculates pump power using total head, specific gravity (density), flow and pump efficiency. Uses Imperial and metric units. Offers a pull down menu with a list of specific gravities for many liquids..
- Platform: Android 2.x, Android 3.x, Android 4.4, Android 4.x
- Publisher: Jacques Chaurette
- Date: 14-01-2015
- Size: 354 KB
- Unit Conversions 2000
- License: Freeware

Unit Conversions 2000 is a small utility that will allow you to quickly convert units of measure from one system to another. Facilities are included to convert various Lengths, Weights, Volumes, Areas, Density, Power and Scale measurements..
- Platform: Windows
- Publisher: Gregory Braun
- Date: 26-02-2005
- Size: 138 KB
- Power Manga
- License: Freeware

Power Manga, developed by TLK Games, belongs already to the legacy of the space adventure. It is one of the best Arcade Game developed under GNU General Public License. The present version for Windows is as neat as exciting. 42 levels, more than 200 sprites, some 14 guards that you must destroy with an arsenal of impressive space fight weaponry gearing handy and fast patrol space vessels. The players have to imagine their own strategy to manage their energy, fire power and chances of surviving in an utterly hostile world.
- Platform: Windows
- Publisher: TLK Games
- Date: 31-01-2005
- Size: 7191 KB
- Laptop Battery Power Monitor
- License: Freeware

Laptop Battery Power Monitor allows you to track the battery power of your laptop. This cool little widget can be dragged across your desktop and placed over any window. To eliminate intrusiveness on your other programs, users can adjust the transparency of the battery. In addition, the battery can be resized to 33%, 50%, or 75% of its original size. If you place your mouse over the battery, your battery's charge status, total hours remaining, and percentage of battery life remaining will be displayed.
- Platform: Windows
- Publisher: Duomart.com
- Date: 17-08-2006
- Size: 421 KB
- power dvd player
- License: Freeware

Free Power DVD Player is a simple player that can find and install correct codec if you don't have on your machine and play DVD disc. It is simple to use and easy to install, It allows you to open and play an DVD video disc..
- Platform: Windows
- Publisher: I've found
- Date: 23-03-2007
- Size: 746 KB
- Laxius Power III
- License: Freeware

Open-ended, award-winning 200H RPG, Laxius Power III is the epic conclusion of the famous trilogy. In a huge world full of creatures (more than 500), it features 150 quests in a non-linear gameplay, including 6 guilds to enter and 2 endings to discover. Laxius Power III is the definitive installment of the series! Get prepared to help Random Pendragon, Sarah Brandolino (the legendary couple of the saga) and all of their friends fight against the Demons as the dreaded cycle is coming towards its accomplishment.
- Platform: Windows
- Publisher: Laxius Power Games
- Date: 23-12-2004
- Size: 30000 KB
Power Spectral Density: Freeware | All







