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.AudioStream; 038import org.openimaj.audio.SampleChunk; 039import org.openimaj.audio.analysis.PowerCepstrumTransform; 040import org.openimaj.image.DisplayUtilities; 041import org.openimaj.image.FImage; 042import org.openimaj.video.xuggle.XuggleAudio; 043 044/** 045 * 046 * 047 * @author David Dupplaw (dpd@ecs.soton.ac.uk) 048 * @created 23 Jul 2012 049 * @version $Author$, $Revision$, $Date$ 050 */ 051public class PowerCepstrumVis 052{ 053 /** 054 * 055 * @param as 056 * @throws Exception 057 */ 058 public PowerCepstrumVis( AudioStream as ) throws Exception 059 { 060 FImage img = new FImage( 1000, 600 ); 061 062 PowerCepstrumTransform pct = new PowerCepstrumTransform(); 063 064 SampleChunk sc = null; 065 while( (sc = as.nextSampleChunk()) != null ) 066 { 067 pct.process( sc ); 068 float[][] c = pct.getLastCepstrum(); 069 for( int i = 0; i < c[0].length; i++ ) 070 img.setPixel( img.getWidth()-1, i, c[0][i]/50f ); 071 img.shiftLeftInplace(); 072 073 DisplayUtilities.displayName( img, "Power Cepstrum" ); 074 } 075 } 076 077 /** 078 * 079 * @param args 080 * @throws Exception 081 */ 082 public static void main( String[] args ) throws Exception 083 { 084 XuggleAudio as = new XuggleAudio( new File("/home/dd/mel.mp4" ) ); 085 new PowerCepstrumVis( as ); 086 } 087}