Package fftFilter

Class FFTFilter

java.lang.Object
fftFilter.FFTFilter
All Implemented Interfaces:
Filter
public class FFTFilter extends Object implements Filter

  • Constructor Summary

    Constructors
    Constructor
    Description
    FFTFilter(FFTFilterParams fftFilterParams, float sampleRate)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    getFilterDelay()
    Gets the delay of the filter - rarely used, but can be important for some processing tasks.
    void
    prepareFilter()
    Calculates the poles and zeros for the filter and sets up any memory buffers required during real time operation.
    double
    runFilter(double aData)
    Runs the filter on a single data value
    void
    runFilter(double[] inputData)
    Runs the filter on an array of data
    void
    runFilter(double[] inputData, double[] outputData)
    Runs the filter on an array of data
    void
    runFilter(Complex[] complexData, int fftLength)
    Filter complex FFT data.
    void
    runFilter(ComplexArray complexData, int fftLength)
     
    void
    setParams(FFTFilterParams fftFilterParams, float sampleRate)
    Set parameters for the filter.

    Methods inherited from class java.lang.Object

    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • FFTFilter

      public FFTFilter(FFTFilterParams fftFilterParams, float sampleRate)

  • Method Details

    • setParams

      public void setParams(FFTFilterParams fftFilterParams, float sampleRate)
      Set parameters for the filter.
      Parameters:
      fftFilterParams - the filter parameters.
      sampleRate - - the sample rate.

    • getFilterDelay

      public int getFilterDelay()
      Description copied from interface: Filter
      Gets the delay of the filter - rarely used, but can be important for some processing tasks. For an IIRF filter, this would be half the number of poles, for a moving average or median filter it would be half the filter length.
      Specified by:
      getFilterDelay in interface Filter
      Returns:
      filter delay in samples.

    • prepareFilter

      public void prepareFilter()
      Description copied from interface: Filter
      Calculates the poles and zeros for the filter and sets up any memory buffers required during real time operation.
      Specified by:
      prepareFilter in interface Filter

    • runFilter

      public void runFilter(double[] inputData, double[] outputData)
      Description copied from interface: Filter
      Runs the filter on an array of data

      New values write into the output data array.

      Specified by:
      runFilter in interface Filter

    • runFilter

      public void runFilter(Complex[] complexData, int fftLength)
      Filter complex FFT data. Note that the data may be full or just half of the FTF length.
      Parameters:
      complexData - Complex Array will be FFTLength of FFTLength / 2 long.
      fftLength - FFT Length

    • runFilter

      public void runFilter(ComplexArray complexData, int fftLength)

    • runFilter

      public void runFilter(double[] inputData)
      Description copied from interface: Filter
      Runs the filter on an array of data

      New values overwrite the old values in the array.

      Specified by:
      runFilter in interface Filter

    • runFilter

      public double runFilter(double aData)
      Description copied from interface: Filter
      Runs the filter on a single data value
      Specified by:
      runFilter in interface Filter
      Returns:
      New data value