001/**
002 * Copyright (c) 2011, The University of Southampton and the individual contributors.
003 * All rights reserved.
004 *
005 * Redistribution and use in source and binary forms, with or without modification,
006 * are permitted provided that the following conditions are met:
007 *
008 *   *  Redistributions of source code must retain the above copyright notice,
009 *      this list of conditions and the following disclaimer.
010 *
011 *   *  Redistributions in binary form must reproduce the above copyright notice,
012 *      this list of conditions and the following disclaimer in the documentation
013 *      and/or other materials provided with the distribution.
014 *
015 *   *  Neither the name of the University of Southampton nor the names of its
016 *      contributors may be used to endorse or promote products derived from this
017 *      software without specific prior written permission.
018 *
019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
021 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
022 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
023 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
026 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029 */
030/**
031 * 
032 */
033package org.openimaj.demos.sandbox.audio;
034
035import java.io.File;
036
037import org.openimaj.audio.AudioPlayer;
038import org.openimaj.audio.filters.EQFilter;
039import org.openimaj.audio.filters.EQFilter.EQType;
040import org.openimaj.video.xuggle.XuggleAudio;
041
042/**
043 *      Demonstration of a band-pass filter using a high-pass filter and a low-pass
044 *      filter to create the band.
045 *
046 *      @author David Dupplaw (dpd@ecs.soton.ac.uk)
047 *  @created 13 Jul 2012
048 *      @version $Author$, $Revision$, $Date$
049 */
050public class BandPassFilterDemo
051{
052        /**
053         *      Main
054         *      @param args CLAs
055         */
056        public static void main( String[] args )
057        {
058                double fc = 1000; // mid-point 1000Hz
059                double q = 1600;  // HPF @ 200Hz, LPF @ 1800Hz
060                
061                XuggleAudio s = new XuggleAudio( new File("videoplayback.mp4") );
062                EQFilter lpf = new EQFilter( s, EQType.LPF, fc+q/2 );
063                EQFilter hpf = new EQFilter( lpf, EQType.HPF, fc-q/2 );
064                
065//              AudioSpectragram as = new AudioSpectragram( hpf );
066//              as.addListener( new SpectragramCompleteListener()
067//              {
068//                      @Override
069//                      public void spectragramComplete( AudioSpectragram as )
070//                      {
071//                              DisplayUtilities.display( as.getLastGeneratedView() );
072//                      }
073//              } );
074//              as.processStream();
075                
076                AudioPlayer ap = new AudioPlayer( hpf );
077                ap.run();
078        }
079}