content: /**
   * Copyright 2004-2006 DFKI GmbH.
   * All Rights Reserved.  Use is subject to license terms.
   * <p/>
   * This file is part of MARY TTS.
   * <p/>
   * MARY TTS is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation, version 3 of the License.
   * <p/>
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU Lesser General Public License for more details.
   * <p/>
   * You should have received a copy of the GNU Lesser General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  package marytts.signalproc.process;
  
  import marytts.util.math.MathUtils;
  
  /**
   * @author Marc Schr&ouml;der
   */
  public class PolarFrequencyProcessor extends FrequencyDomainProcessor {
  
      /**
       * @param fftSize
       */
      public PolarFrequencyProcessor(int fftSize, double amount) {
          super(fftSize, amount);
          //super(fftSize);
      }
  
      public PolarFrequencyProcessor(int fftSize) {
          this(fftSize, 1.0);
      }
  
      /**
       * Here the actual processing of the frequency-domain frame (in cartesian coordinates) happens.
       * This implementation converts to polar coordinates calls processPolar(), and
       * converts the result back to cartesian coordinates.
       *
       * @param real
       * @param imag
       */
      @Override
      protected final void process(double[] real, double[] imag) {
          MathUtils.toPolarCoordinates(real, imag);
          // for readability:
          double[] r = real;
          double[] phi = imag;
          // Now do something meaningful with the fourier transform
          processPolar(r, phi);
          // Convert back:
          MathUtils.toCartesianCoordinates(real, imag);
      }
  
      /**
       * Here the actual processing of the frequency-domain frame (in polar coordinates) happens.
       * This base implementation does nothing.
       *
       * @param r
       * @param phi
       */
      protected void processPolar(double[] r, double[] phi) {
      }
  }
  
  