| java.lang.Object
 com.db.media.audio.dsp.monitors.FFT
| FFT | | public class FFT (Code) | | This is a Java implementation of the fast Fourier transform
written by Jef Poskanzer. The copyright appears above.
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| Constructor Summary | |
| public | FFT(int bits)
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| Method Summary | |
| public void | doFFT(double[] xr, double[] xi, boolean invFlag)
A fast Fourier transform routine
double [] xr is the real part of the data to be transformed double [] xi is the imaginary part of the data to be transformed(normally zero unless inverse transofrm is effect). |
| FFT | | public FFT(int bits)(Code) | | FFT class constructor
Initializes code for doing a fast Fourier transform
int bits is a power of two such that 2^b is the numberof samples. |
| doFFT | | public void doFFT(double[] xr, double[] xi, boolean invFlag)(Code) | | A fast Fourier transform routine
double [] xr is the real part of the data to be transformed double [] xi is the imaginary part of the data to be transformed(normally zero unless inverse transofrm is effect). boolean invFlag which is true if inverse transform is beingapplied. false for a forward transform. |
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