Search Results for "dft"

...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.

In this project, a perfect PCM sine wave is one that contains a single frequency at 0 dBTP and no error harmonics at all. A bit-perfect PCM sine wave has error harmonics due to encoding quantization, but they are at the minimum level possible for the chosen encoding. The generated wave files hold a sequence of one or more complete copies of a repeating pattern. A file containing a single pattern can be played in a loop to extend the play time. Because most audio players don't loop...

...Sources are available with binaries to follow soon. News: V2.1 with many improvements released on 07/15/2016. Sources and binaries are available. RMG is a density functional theory (DFT) based electronic structure code that uses real space grids to represent wavefunctions, charge densities and ionic potentials. Designed for scaleability it has been run successfully on systems with thousands of nodes and hundreds of thousands of CPU cores. It is currently under active development and contributions are gladly accepted.

The molecular mechanics (MM) program Iphigenie provides a broad range of molecular dynamics (MD) methods and technologies, including polarizable force fields (PMM), the HADES reaction field, and QM/(P)MM hybrid simulations.

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.

This program is a soundcard based signalgenerator and oscilloscope for low frequency and low voltage signals written for linux using the alsa api. It uses the internal DAC/ADC of the soundcard (PCM) to capture signals or generate them. Depending on the available PCM device, it's possible to generate or capture signals up to 96 Khz.

The ab initio Spinor Project is a scientifc code project based on density functional theory (DFT) within the ab initio pseudopotential frame work. The code implements the fundamental Kohn-Sham functions in form of two-component spinors, hence allowing to

snd2fftw is a small tool that reads samples from audio file (WAV for example) and makes DFT on them.