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

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Picture of Michele Andreoli
Name: Michele Andreoli is available for providing paid consulting. Contact Michele Andreoli .
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Country: Italy Italy
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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 .

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Name: Fast Fourier Transform
Base name: fft
Description: Compute the Fast Fourier Transform of sampled data
Version: 0.1
PHP version: 5
License: GNU General Public License (GPL)
All time users: 1002 users
All time rank: 3384
Week users: 2 users
Week rank: 966 Up
 
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PHP Programming Innovation award nominee
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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

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Probability distribution To perform the Fast Fourier Transform and applying the filters at the signal Required

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Plain text file Complex.class.php Class Complex class
Plain text file FFT.class.php Class FFT class
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