PHP Classes

Fast Fourier Transform: Compute the Fast Fourier Transform of sampled data

Recommend this page to a friend!
     
  Info   Screenshots   View files Files   Install with Composer Install with Composer   Download Download   Reputation   Support forum   Blog    
Ratings Unique User Downloads Download Rankings
StarStarStar 51%Total: 1,647 All time: 2,384 This week: 43Up
Version License PHP version Categories
fft 0.1GNU General Publi...5Algorithms, PHP 5, Audio
Description 

Author

Michele Andreoli

This class can be used to compute the Fast Fourier Transform (FFT) of sampled data, as well the inverse Fast Fourier transform.

It takes an array of sample data values and calculates the respective Fast Fourier Transform. The result is returned as an array of complex values.

The class can also do the opposite, i.e. compute the inverse Fast Fourier transform .

Innovation Award
PHP Programming Innovation award nominee
May 2010
Number 5

Prize: One downloadable copy of Komodo IDE		 Fast Fourier transform is an algorithm that can be used to compute the spectrum of frequencies of a sound sample or any other type of sampled signal.

This class can be used to compute the Fast Fourier transform of a given sample, as well the inverse operation, rebuild the original signal from its frequency spectrum.

Manuel Lemos
Picture of Michele Andreoli
  Performance   Level  
Name: Michele Andreoli is available for providing paid consulting. Contact Michele Andreoli .
Classes: 7 packages by
Country: Italy Italy
Age: 38
All time rank: 54018 in Italy Italy
Week rank: 170 Up7 in Italy Italy Up

Level 4 StarStarStarStar

 Innovation award
Innovation award
Nominee: 4x

Screenshots (1)  
  • screenshot
  Files folder image Files (5)  
File Role Description
Plain text file Complex.class.php Class Complex class
Plain text file FFT.class.php Class FFT class
Accessible without login Plain text file index.php Example Index
Accessible without login HTML file output.html Output Output

The PHP Classes site has supported package installation using the Composer tool since 2013, as you may verify by reading this instructions page.
Install with Composer Install with Composer
Downloadfft-2014-08-30.zip 24KB
Downloadfft-2014-08-30.tar.gz 23KB
Install with ComposerInstall with Composer
 Version Control Reuses Unique User Downloads Download Rankings  
 0%1
Total:1,647
This week:0
All time:2,384
This week:43Up
User Ratings User Comments (1)
 All time
Utility:75%StarStarStarStar
Consistency:66%StarStarStarStar
Documentation:-
Examples:75%StarStarStarStar
Tests:-
Videos:-
Overall:51%StarStarStar
Rank:2511
 
Array dimensions limited to power of 2.
12 years ago (Özkan KIRIK)		27%StarStar
 

  Applications that use this package  
No pages of applications that use this class were specified.

Add link image If you know an application of this package, send a message to the author to add a link here.


  Other classes that need this package  
Class Why it is needed Dependency
Probability distribution To perform the Fast Fourier Transform and applying the filters at the signal Required