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Class VS.vsFFT1D 

java.lang.Object
   |
   +----VS.vsFFT1D
public class vsFFT1D
extends java.lang.Object

Variable Index

o direction
o FORWARD_FFT
o i_data
o N
o numBits
o r_data
o REVERSE_FFT
o twoPI

Constructor Index

o vsFFT1D()

Method Index

o bitr(int)
o bitReverse()
o bitReverse2()
o fft(double[], double[])
FFT engine.
o forwardFFT(double[], double[])
o getImaginaryData()
o getMaxValue(double[])
o getRealData()
o magnitudeSpectrum(double[], double[])
o reverseFFT(double[], double[])
o swap(int)
1D FFT utility functions.
o swapInt(int, int)
o TestFFT()
A way to visually test the 1D FFT on a small amount of data.

Variables

o FORWARD_FFT 
 private final int FORWARD_FFT
o REVERSE_FFT 
 private final int REVERSE_FFT
o direction 
 private float direction
o twoPI 
 static final float twoPI
o N 
 private int N
o numBits 
 private int numBits
o r_data 
 double r_data[]
o i_data 
 double i_data[]

Constructors

o vsFFT1D 
 public vsFFT1D()

Methods

o TestFFT 
 public void TestFFT()
A way to visually test the 1D FFT on a small amount of data.

o swap 
 public void swap(int i)
1D FFT utility functions.

o swapInt 
 public void swapInt(int i,
                     int j)
o getMaxValue 
 double getMaxValue(double in[])
o bitReverse2 
 void bitReverse2()
o bitReverse 
 void bitReverse()
o bitr 
 int bitr(int j)
o forwardFFT 
 public void forwardFFT(double in_r[],
                        double in_i[])
o reverseFFT 
 public void reverseFFT(double in_r[],
                        double in_i[])
o fft 
 public void fft(double in_r[],
                 double in_i[])
FFT engine.

o getRealData 
 public double[] getRealData()
o getImaginaryData 
 public double[] getImaginaryData()
o magnitudeSpectrum 
 public double[] magnitudeSpectrum(double in_r[],
                                   double in_i[])

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