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}