Fast Fourier Transform
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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 .
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 .
| Classes of Michele Andreoli | > | Fast Fourier Transform | > | Download .zip .tar.gz | > |  Support forum (2) |
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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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| Class | Dependency | Why it is needed |
|---|---|---|
| Probability distribution | To perform the Fast Fourier Transform and applying the filters at the signal |
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No application links were specified for this class.
If you know an application of this package, send a message to the author to add a link here.| Files |
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| File | Role | Description |
|---|---|---|
| Complex.class.php |
Class | Complex class |
| FFT.class.php |
Class | FFT class |
| index.php |
Example | Index |
 output.html |
Output | Output |
| Download all files: fft.tar.gz fft.zip |
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