9fee0ec4ca
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7101 a1c6a512-1295-4272-9138-f99709370657
55 lines
1.4 KiB
Java
55 lines
1.4 KiB
Java
/*
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* TVolumeUtils.java
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*
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* This file is part of Tritonus: http://www.tritonus.org/
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*/
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/*
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* Copyright (c) 1999 by Matthias Pfisterer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as published
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* by the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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|<--- this code is formatted to fit into 80 columns --->|
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*/
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package org.tritonus.share.sampled;
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public class TVolumeUtils
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{
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private static final double FACTOR1 = 20.0 / Math.log(10.0);
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private static final double FACTOR2 = 1 / 20.0;
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public static double lin2log(double dLinear)
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{
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return FACTOR1 * Math.log(dLinear);
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}
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public static double log2lin(double dLogarithmic)
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{
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return Math.pow(10.0, dLogarithmic * FACTOR2);
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}
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}
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/*** TVolumeUtils.java ***/
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