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sphinxbase-devel-0.7-1.fc14.i686.rpm

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<h1>include/sphinxbase/cmn.h</h1>  </div>
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<a href="cmn_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */</span>
<a name="l00002"></a>00002 <span class="comment">/* ====================================================================</span>
<a name="l00003"></a>00003 <span class="comment"> * Copyright (c) 1999-2004 Carnegie Mellon University.  All rights</span>
<a name="l00004"></a>00004 <span class="comment"> * reserved.</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * Redistribution and use in source and binary forms, with or without</span>
<a name="l00007"></a>00007 <span class="comment"> * modification, are permitted provided that the following conditions</span>
<a name="l00008"></a>00008 <span class="comment"> * are met:</span>
<a name="l00009"></a>00009 <span class="comment"> *</span>
<a name="l00010"></a>00010 <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span>
<a name="l00011"></a>00011 <span class="comment"> *    notice, this list of conditions and the following disclaimer. </span>
<a name="l00012"></a>00012 <span class="comment"> *</span>
<a name="l00013"></a>00013 <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright</span>
<a name="l00014"></a>00014 <span class="comment"> *    notice, this list of conditions and the following disclaimer in</span>
<a name="l00015"></a>00015 <span class="comment"> *    the documentation and/or other materials provided with the</span>
<a name="l00016"></a>00016 <span class="comment"> *    distribution.</span>
<a name="l00017"></a>00017 <span class="comment"> *</span>
<a name="l00018"></a>00018 <span class="comment"> * This work was supported in part by funding from the Defense Advanced </span>
<a name="l00019"></a>00019 <span class="comment"> * Research Projects Agency and the National Science Foundation of the </span>
<a name="l00020"></a>00020 <span class="comment"> * United States of America, and the CMU Sphinx Speech Consortium.</span>
<a name="l00021"></a>00021 <span class="comment"> *</span>
<a name="l00022"></a>00022 <span class="comment"> * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS&#39;&#39; AND </span>
<a name="l00023"></a>00023 <span class="comment"> * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, </span>
<a name="l00024"></a>00024 <span class="comment"> * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR</span>
<a name="l00025"></a>00025 <span class="comment"> * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY</span>
<a name="l00026"></a>00026 <span class="comment"> * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span>
<a name="l00027"></a>00027 <span class="comment"> * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT </span>
<a name="l00028"></a>00028 <span class="comment"> * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, </span>
<a name="l00029"></a>00029 <span class="comment"> * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY </span>
<a name="l00030"></a>00030 <span class="comment"> * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT </span>
<a name="l00031"></a>00031 <span class="comment"> * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE </span>
<a name="l00032"></a>00032 <span class="comment"> * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00033"></a>00033 <span class="comment"> *</span>
<a name="l00034"></a>00034 <span class="comment"> * ====================================================================</span>
<a name="l00035"></a>00035 <span class="comment"> *</span>
<a name="l00036"></a>00036 <span class="comment"> */</span>
<a name="l00037"></a>00037 <span class="comment">/*</span>
<a name="l00038"></a>00038 <span class="comment"> * cmn.h -- Various forms of cepstral mean normalization</span>
<a name="l00039"></a>00039 <span class="comment"> *</span>
<a name="l00040"></a>00040 <span class="comment"> * **********************************************</span>
<a name="l00041"></a>00041 <span class="comment"> * CMU ARPA Speech Project</span>
<a name="l00042"></a>00042 <span class="comment"> *</span>
<a name="l00043"></a>00043 <span class="comment"> * Copyright (c) 1999 Carnegie Mellon University.</span>
<a name="l00044"></a>00044 <span class="comment"> * ALL RIGHTS RESERVED.</span>
<a name="l00045"></a>00045 <span class="comment"> * **********************************************</span>
<a name="l00046"></a>00046 <span class="comment"> * </span>
<a name="l00047"></a>00047 <span class="comment"> * HISTORY</span>
<a name="l00048"></a>00048 <span class="comment"> * $Log$</span>
<a name="l00049"></a>00049 <span class="comment"> * Revision 1.1  2006/04/05  20:27:30  dhdfu</span>
<a name="l00050"></a>00050 <span class="comment"> * A Great Reorganzation of header files and executables</span>
<a name="l00051"></a>00051 <span class="comment"> * </span>
<a name="l00052"></a>00052 <span class="comment"> * Revision 1.13  2006/02/23 03:48:27  arthchan2003</span>
<a name="l00053"></a>00053 <span class="comment"> * Resolved conflict in cmn.h</span>
<a name="l00054"></a>00054 <span class="comment"> *</span>
<a name="l00055"></a>00055 <span class="comment"> *</span>
<a name="l00056"></a>00056 <span class="comment"> * Revision 1.12  2006/02/22 23:43:55  arthchan2003</span>
<a name="l00057"></a>00057 <span class="comment"> * Merged from the branch SPHINX3_5_2_RCI_IRII_BRANCH: Put data structure into the cmn_t structure.</span>
<a name="l00058"></a>00058 <span class="comment"> *</span>
<a name="l00059"></a>00059 <span class="comment"> * Revision 1.11.4.2  2005/10/17 04:45:57  arthchan2003</span>
<a name="l00060"></a>00060 <span class="comment"> * Free stuffs in cmn and feat corectly.</span>
<a name="l00061"></a>00061 <span class="comment"> *</span>
<a name="l00062"></a>00062 <span class="comment"> * Revision 1.11.4.1  2005/07/05 06:25:08  arthchan2003</span>
<a name="l00063"></a>00063 <span class="comment"> * Fixed dox-doc.</span>
<a name="l00064"></a>00064 <span class="comment"> *</span>
<a name="l00065"></a>00065 <span class="comment"> * Revision 1.11  2005/06/21 19:28:00  arthchan2003</span>
<a name="l00066"></a>00066 <span class="comment"> * 1, Fixed doxygen documentation. 2, Added $ keyword.</span>
<a name="l00067"></a>00067 <span class="comment"> *</span>
<a name="l00068"></a>00068 <span class="comment"> * Revision 1.4  2005/06/13 04:02:56  archan</span>
<a name="l00069"></a>00069 <span class="comment"> * Fixed most doxygen-style documentation under libs3decoder.</span>
<a name="l00070"></a>00070 <span class="comment"> *</span>
<a name="l00071"></a>00071 <span class="comment"> * Revision 1.3  2005/03/30 01:22:46  archan</span>
<a name="l00072"></a>00072 <span class="comment"> * Fixed mistakes in last updates. Add</span>
<a name="l00073"></a>00073 <span class="comment"> *</span>
<a name="l00074"></a>00074 <span class="comment"> * </span>
<a name="l00075"></a>00075 <span class="comment"> * 20.Apr.2001  RAH (rhoughton@mediasite.com, ricky.houghton@cs.cmu.edu)</span>
<a name="l00076"></a>00076 <span class="comment"> *              Added cmn_free() and moved *mean and *var out global space and named them cmn_mean and cmn_var</span>
<a name="l00077"></a>00077 <span class="comment"> * </span>
<a name="l00078"></a>00078 <span class="comment"> * 28-Apr-1999  M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University</span>
<a name="l00079"></a>00079 <span class="comment"> *              Copied from previous version.</span>
<a name="l00080"></a>00080 <span class="comment"> */</span>
<a name="l00081"></a>00081 
<a name="l00082"></a>00082 
<a name="l00083"></a>00083 <span class="preprocessor">#ifndef _S3_CMN_H_</span>
<a name="l00084"></a>00084 <span class="preprocessor"></span><span class="preprocessor">#define _S3_CMN_H_</span>
<a name="l00085"></a>00085 <span class="preprocessor"></span>
<a name="l00086"></a>00086 <span class="comment">/* Win32/WinCE DLL gunk */</span>
<a name="l00087"></a>00087 <span class="preprocessor">#include &lt;sphinxbase/sphinxbase_export.h&gt;</span>
<a name="l00088"></a>00088 <span class="preprocessor">#include &lt;sphinxbase/prim_type.h&gt;</span>
<a name="l00089"></a>00089 <span class="preprocessor">#include &lt;sphinxbase/fe.h&gt;</span>
<a name="l00090"></a>00090 
<a name="l00091"></a>00091 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00092"></a>00092 <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {
<a name="l00093"></a>00093 <span class="preprocessor">#endif</span>
<a name="l00094"></a>00094 <span class="preprocessor"></span><span class="preprocessor">#if 0</span>
<a name="l00095"></a>00095 <span class="preprocessor"></span><span class="comment">/* Fool Emacs. */</span>
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097 <span class="preprocessor">#endif</span>
<a name="l00098"></a>00098 <span class="preprocessor"></span>
<a name="l00110"></a><a class="code" href="cmn_8h.html#a5bb134416e9e63a317eac20b0102bd59">00110</a> <span class="keyword">typedef</span> <span class="keyword">enum</span> <a class="code" href="cmn_8h.html#a5bb134416e9e63a317eac20b0102bd59" title="Types of cepstral mean normalization to apply to the features.">cmn_type_e</a> {
<a name="l00111"></a>00111     CMN_NONE = 0,
<a name="l00112"></a>00112     CMN_CURRENT,
<a name="l00113"></a>00113     CMN_PRIOR
<a name="l00114"></a>00114 } <a class="code" href="cmn_8h.html#a9384c411b10e9db9745cfb550a5c7652" title="Types of cepstral mean normalization to apply to the features.">cmn_type_t</a>;
<a name="l00115"></a>00115 
<a name="l00117"></a>00117 SPHINXBASE_EXPORT
<a name="l00118"></a>00118 <span class="keyword">extern</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="cmn_8h.html#ae2ab0bad7168386076c43fc2a421867f" title="String representations of cmn_type_t values.">cmn_type_str</a>[];
<a name="l00119"></a>00119 
<a name="l00121"></a>00121 SPHINXBASE_EXPORT
<a name="l00122"></a>00122 <a class="code" href="cmn_8h.html#a9384c411b10e9db9745cfb550a5c7652" title="Types of cepstral mean normalization to apply to the features.">cmn_type_t</a> <a class="code" href="cmn_8h.html#acf5e65a03a0d74630add4a400fed0ce8" title="Convert string representation (from command-line) to cmn_type_t.">cmn_type_from_str</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *str);
<a name="l00123"></a>00123 
<a name="l00128"></a><a class="code" href="structcmn__t.html">00128</a> <span class="keyword">typedef</span> <span class="keyword">struct </span>{
<a name="l00129"></a><a class="code" href="structcmn__t.html#aef0faa6cd93f1d9cf12659c5980aefd2">00129</a>     mfcc_t *<a class="code" href="structcmn__t.html#aef0faa6cd93f1d9cf12659c5980aefd2" title="Temporary variable: current means.">cmn_mean</a>;   
<a name="l00130"></a><a class="code" href="structcmn__t.html#a72813f1c9423186f5bd66ecb39099eb5">00130</a>     mfcc_t *<a class="code" href="structcmn__t.html#a72813f1c9423186f5bd66ecb39099eb5" title="Temporary variables: stored the cmn variance.">cmn_var</a>;    
<a name="l00131"></a><a class="code" href="structcmn__t.html#adb70819b1ca822d5a4ee6dc94b3b48e7">00131</a>     mfcc_t *<a class="code" href="structcmn__t.html#adb70819b1ca822d5a4ee6dc94b3b48e7" title="The sum of the cmn frames.">sum</a>;        
<a name="l00132"></a><a class="code" href="structcmn__t.html#a456cc3313e93fa3057b658fef64a0c53">00132</a>     int32 <a class="code" href="structcmn__t.html#a456cc3313e93fa3057b658fef64a0c53" title="Number of frames.">nframe</a>;       
<a name="l00133"></a><a class="code" href="structcmn__t.html#a10472e0ad9272f764b512ade43f37d69">00133</a>     int32 <a class="code" href="structcmn__t.html#a10472e0ad9272f764b512ade43f37d69" title="Length of cepstral vector.">veclen</a>;       
<a name="l00134"></a>00134 } <a class="code" href="structcmn__t.html" title="wrapper of operation of the cepstral mean normalization.">cmn_t</a>;
<a name="l00135"></a>00135 
<a name="l00136"></a>00136 SPHINXBASE_EXPORT
<a name="l00137"></a>00137 <a class="code" href="structcmn__t.html" title="wrapper of operation of the cepstral mean normalization.">cmn_t</a>* cmn_init(int32 veclen);
<a name="l00138"></a>00138 
<a name="l00142"></a>00142 SPHINXBASE_EXPORT
<a name="l00143"></a>00143 <span class="keywordtype">void</span> <a class="code" href="cmn_8h.html#accf10de8ef4d98b4bf591529cf16565e" title="CMN for the whole sentence.">cmn</a> (<a class="code" href="structcmn__t.html" title="wrapper of operation of the cepstral mean normalization.">cmn_t</a> *cmn,   
<a name="l00144"></a>00144           mfcc_t **mfc, 
<a name="l00145"></a>00145           int32 varnorm,
<a name="l00148"></a>00148           int32 n_frame 
<a name="l00149"></a>00149         );
<a name="l00150"></a>00150 
<a name="l00151"></a>00151 <span class="preprocessor">#define CMN_WIN_HWM     800     </span><span class="comment">/* #frames after which window shifted */</span>
<a name="l00152"></a>00152 <span class="preprocessor">#define CMN_WIN         500</span>
<a name="l00153"></a>00153 <span class="preprocessor"></span>
<a name="l00157"></a>00157 SPHINXBASE_EXPORT
<a name="l00158"></a>00158 <span class="keywordtype">void</span> <a class="code" href="cmn_8h.html#aa622cf1b6a1b9a9bffd8f60b903bfc42" title="CMN for one block of data, using prior mean.">cmn_prior</a>(<a class="code" href="structcmn__t.html" title="wrapper of operation of the cepstral mean normalization.">cmn_t</a> *cmn,        
<a name="l00160"></a>00160                mfcc_t **incep,  
<a name="l00161"></a>00161                int32 varnorm,    
<a name="l00162"></a>00162                int32 nfr         
<a name="l00163"></a>00163     );
<a name="l00164"></a>00164 
<a name="l00168"></a>00168 SPHINXBASE_EXPORT
<a name="l00169"></a>00169 <span class="keywordtype">void</span> <a class="code" href="cmn_8h.html#aae61df2ec71082520669fc63d94bb1ef" title="Update prior mean based on observed data.">cmn_prior_update</a>(<a class="code" href="structcmn__t.html" title="wrapper of operation of the cepstral mean normalization.">cmn_t</a> *cmn);
<a name="l00170"></a>00170 
<a name="l00174"></a>00174 SPHINXBASE_EXPORT
<a name="l00175"></a>00175 <span class="keywordtype">void</span> <a class="code" href="cmn_8h.html#a0f6f70d51143d6a33130650b8d4758ab" title="Set the prior mean.">cmn_prior_set</a>(<a class="code" href="structcmn__t.html" title="wrapper of operation of the cepstral mean normalization.">cmn_t</a> *cmn, mfcc_t <span class="keyword">const</span> *vec);
<a name="l00176"></a>00176 
<a name="l00180"></a>00180 SPHINXBASE_EXPORT
<a name="l00181"></a>00181 <span class="keywordtype">void</span> <a class="code" href="cmn_8h.html#a4f624f5b805288f66fa05b79b1e4f383" title="Get the prior mean.">cmn_prior_get</a>(<a class="code" href="structcmn__t.html" title="wrapper of operation of the cepstral mean normalization.">cmn_t</a> *cmn, mfcc_t *vec);
<a name="l00182"></a>00182 
<a name="l00183"></a>00183 <span class="comment">/* RAH, free previously allocated memory */</span>
<a name="l00184"></a>00184 SPHINXBASE_EXPORT
<a name="l00185"></a>00185 <span class="keywordtype">void</span> cmn_free (<a class="code" href="structcmn__t.html" title="wrapper of operation of the cepstral mean normalization.">cmn_t</a> *cmn);
<a name="l00186"></a>00186 
<a name="l00187"></a>00187 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00188"></a>00188 <span class="preprocessor"></span>}
<a name="l00189"></a>00189 <span class="preprocessor">#endif</span>
<a name="l00190"></a>00190 <span class="preprocessor"></span>
<a name="l00191"></a>00191 <span class="preprocessor">#endif</span>
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