PHP Classes

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

Recommend this page to a friend!
  Info   Screenshots Screenshots   View files View files (4)   DownloadInstall with Composer Download .zip   Reputation   Support forum (3)   Blog    
Ratings Unique User Downloads Download Rankings
StarStarStar 51%Total: 1,645 This week: 1All time: 2,390 This week: 560Up
Version License PHP version Categories
fft 0.1GNU General Publi...5Algorithms, PHP 5, Audio
Description 

Author

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: 54118 in Italy Italy
Week rank: 416 Up16 in Italy Italy Up
Innovation award
Innovation award
Nominee: 4x

Screenshots  
  • screenshot
  Files folder image Files  
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

 Version Control Reuses Unique User Downloads Download Rankings  
 0%1
Total:1,645
This week:1
All time:2,390
This week:560Up
User Ratings User Comments (1)
 All time
Utility:75%StarStarStarStar
Consistency:66%StarStarStarStar
Documentation:-
Examples:75%StarStarStarStar
Tests:-
Videos:-
Overall:51%StarStarStar
Rank:2471
 
Array dimensions limited to power of 2.
11 years ago (Özkan KIRIK)
27%StarStar