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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
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<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
<meta name="generator" content="AsciiDoc 8.6.3" />
<title>TwoLAME</title>
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<body class="article">
<div id="header">
<h1>TwoLAME</h1>
<span id="revnumber">version 0.3.13</span>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph"><p>Based on tooLAME by Michael Cheng</p></div>
<div class="paragraph"><p>All changes to the ISO source are licensed under the LGPL
(see COPYING for details)</p></div>
<div class="literalblock">
<div class="content">
<pre><tt>TwoLAME 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; either
version 2.1 of the License, or (at your option) any later version.</tt></pre>
</div></div>
<div class="literalblock">
<div class="content">
<pre><tt>TwoLAME 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.</tt></pre>
</div></div>
<div class="literalblock">
<div class="content">
<pre><tt>You should have received a copy of the GNU Lesser General Public
License along with TwoLAME; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA</tt></pre>
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_introduction">INTRODUCTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>TwoLAME is an optimized MPEG Audio Layer 2 (MP2) encoder.
It is based heavily on:</p></div>
<div class="ulist"><ul>
<li>
<p>
tooLAME by Michael Cheng
</p>
</li>
<li>
<p>
the ISO dist10 code
</p>
</li>
<li>
<p>
improvement to algorithms as part of the LAME project (lame.sf.net)
</p>
</li>
<li>
<p>
other contributors (see AUTHORS)
</p>
</li>
</ul></div>
<div class="paragraph"><p>TwoLAME should be able to be used as a drop-in replacement for
LAME (a MPEG Layer 3 encoder). The frontend takes very similar
command line options to LAME, and the backend library has a very
similar API to LAME.</p></div>
<div class="paragraph"><p>For the latest version of TwoLAME, visit the project homepage:
<a href="http://www.twolame.org/">http://www.twolame.org/</a></p></div>
</div>
</div>
<div class="sect1">
<h2 id="_mpeg_audio_layer_2_mp2">MPEG Audio Layer 2 (MP2)</h2>
<div class="sectionbody">
<div class="paragraph"><p>(taken from Wikipedia article on MP2)</p></div>
<div class="paragraph"><p>MP2 (sometimes incorrectly named Musicam) is a short form of MPEG Audio Layer II,
and it is also used as a file extension for files containing audio data of this
type. While it has largely been superseded by MP3 for PC and Internet applications,
it remains a dominant standard for audio broadcasting as part of the DAB digital
radio and DVB digital television standards. It is also used internally within the
radio industry, for example in NPR&#8217;s PRSS Content Depot programming distribution
system.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_installation">INSTALLATION</h2>
<div class="sectionbody">
<div class="paragraph"><p>Standard automake process:</p></div>
<div class="literalblock">
<div class="content">
<pre><tt>./configure
make
make install</tt></pre>
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_reference_papers">REFERENCE PAPERS</h2>
<div class="sectionbody">
<div class="paragraph"><p>(Specifically Layer II Papers)</p></div>
<div class="paragraph"><p>Kumar, M &amp; Zubair, M., A high performance software implementation of mpeg audio
encoder, 1996, ICASSP Conf Proceedings (I think)</p></div>
<div class="paragraph"><p>Fischer, K.A., Calculation of the psychoacoustic simultaneous masked threshold
based on MPEG/Audio Encoder Model One, ICSI Technical Report, 1997
<a href="ftp://ftp.icsi.berkeley.edu/pub/real/kyrill/PsychoMpegOne.tar.Z">ftp://ftp.icsi.berkeley.edu/pub/real/kyrill/PsychoMpegOne.tar.Z</a></p></div>
<div class="paragraph"><p>Hyen-O et al, New Implementation techniques of a real-time mpeg-2 audio encoding
system. p2287, ICASSP 99.</p></div>
<div class="paragraph"><p>Imai, T., et al, MPEG-1 Audio real-time encoding system, IEEE Trans on Consumer
Electronics, v44, n3 1998. p888</p></div>
<div class="paragraph"><p>Teh, D., et al, Efficient bit allocation algorithm for ISO/MPEG audio encoder,
Electronics Letters, v34, n8, p721</p></div>
<div class="paragraph"><p>Murphy, C &amp; Anandakumar, K, Real-time MPEG-1 audio coding and decoding on a DSP
Chip, IEEE Trans on Consumer Electronics, v43, n1, 1997 p40</p></div>
<div class="paragraph"><p>Hans, M &amp; Bhaskaran, V., A compliant MPEG-1 layer II audio decoder with 16-B
arithmetic operations, IEEE Signal Proc Letters v4 n5 1997 p121</p></div>
</div>
</div>
</div>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
Version 0.3.13<br />
Last updated 2011-01-01 19:15:01 GMT
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