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<h1>src/libpocketsphinx/ms_mgau.c</h1> </div>
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<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'' 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"> * ms_mgau.c -- Essentially a wrapper that wrap up gauden and</span>
<a name="l00039"></a>00039 <span class="comment"> * senone. It supports multi-stream. </span>
<a name="l00040"></a>00040 <span class="comment"> *</span>
<a name="l00041"></a>00041 <span class="comment"> *</span>
<a name="l00042"></a>00042 <span class="comment"> * **********************************************</span>
<a name="l00043"></a>00043 <span class="comment"> * CMU ARPA Speech Project</span>
<a name="l00044"></a>00044 <span class="comment"> *</span>
<a name="l00045"></a>00045 <span class="comment"> * Copyright (c) 1997 Carnegie Mellon University.</span>
<a name="l00046"></a>00046 <span class="comment"> * ALL RIGHTS RESERVED.</span>
<a name="l00047"></a>00047 <span class="comment"> * **********************************************</span>
<a name="l00048"></a>00048 <span class="comment"> * HISTORY</span>
<a name="l00049"></a>00049 <span class="comment"> * $Log$</span>
<a name="l00050"></a>00050 <span class="comment"> * Revision 1.2 2006/02/22 16:56:01 arthchan2003</span>
<a name="l00051"></a>00051 <span class="comment"> * Merged from SPHINX3_5_2_RCI_IRII_BRANCH: Added ms_mgau.[ch] into the trunk. It is a wrapper of ms_gauden and ms_senone</span>
<a name="l00052"></a>00052 <span class="comment"> * </span>
<a name="l00053"></a>00053 <span class="comment"> * Revision 1.1.2.4 2005/09/25 18:55:19 arthchan2003</span>
<a name="l00054"></a>00054 <span class="comment"> * Added a flag to turn on and off precomputation.</span>
<a name="l00055"></a>00055 <span class="comment"> *</span>
<a name="l00056"></a>00056 <span class="comment"> * Revision 1.1.2.3 2005/08/03 18:53:44 dhdfu</span>
<a name="l00057"></a>00057 <span class="comment"> * Add memory deallocation functions. Also move all the initialization</span>
<a name="l00058"></a>00058 <span class="comment"> * of ms_mgau_model_t into ms_mgau_init (duh!), which entails removing it</span>
<a name="l00059"></a>00059 <span class="comment"> * from decode_anytopo and friends.</span>
<a name="l00060"></a>00060 <span class="comment"> *</span>
<a name="l00061"></a>00061 <span class="comment"> * Revision 1.1.2.2 2005/08/02 21:05:38 arthchan2003</span>
<a name="l00062"></a>00062 <span class="comment"> * 1, Added dist and mgau_active as intermediate variable for computation. 2, Added ms_cont_mgau_frame_eval, which is a multi stream version of GMM computation mainly s3.0 family of tools. 3, Fixed dox-doc.</span>
<a name="l00063"></a>00063 <span class="comment"> *</span>
<a name="l00064"></a>00064 <span class="comment"> * Revision 1.1.2.1 2005/07/20 19:37:09 arthchan2003</span>
<a name="l00065"></a>00065 <span class="comment"> * Added a multi-stream cont_mgau (ms_mgau) which is a wrapper of both gauden and senone. Add ms_mgau_init and model_set_mllr. This allow eliminating 600 lines of code in decode_anytopo/align/allphone.</span>
<a name="l00066"></a>00066 <span class="comment"> *</span>
<a name="l00067"></a>00067 <span class="comment"> *</span>
<a name="l00068"></a>00068 <span class="comment"> *</span>
<a name="l00069"></a>00069 <span class="comment"> */</span>
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <span class="comment">/* Local headers. */</span>
<a name="l00072"></a>00072 <span class="preprocessor">#include "<a class="code" href="ms__mgau_8h.html" title="(Sphinx 3.0 specific) A module that wraps up the code of gauden and senone because they are closely r...">ms_mgau.h</a>"</span>
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="keyword">static</span> <a class="code" href="structps__mgaufuncs__s.html">ps_mgaufuncs_t</a> ms_mgau_funcs = {
<a name="l00075"></a>00075 <span class="stringliteral">"ms"</span>,
<a name="l00076"></a>00076 &ms_cont_mgau_frame_eval, <span class="comment">/* frame_eval */</span>
<a name="l00077"></a>00077 &ms_mgau_mllr_transform, <span class="comment">/* transform */</span>
<a name="l00078"></a>00078 &ms_mgau_free <span class="comment">/* free */</span>
<a name="l00079"></a>00079 };
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <a class="code" href="structps__mgau__s.html">ps_mgau_t</a> *
<a name="l00082"></a>00082 ms_mgau_init(cmd_ln_t *config, logmath_t *lmath, <a class="code" href="structbin__mdef__s.html">bin_mdef_t</a> *mdef)
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 <span class="comment">/* Codebooks */</span>
<a name="l00085"></a>00085 <a class="code" href="structms__mgau__model__t.html">ms_mgau_model_t</a> *msg;
<a name="l00086"></a>00086 <a class="code" href="structps__mgau__s.html">ps_mgau_t</a> *mg;
<a name="l00087"></a>00087 <a class="code" href="structgauden__t.html" title="Multivariate gaussian mixture density parameters.">gauden_t</a> *g;
<a name="l00088"></a>00088 <a class="code" href="structsenone__t.html" title="8-bit senone PDF structure.">senone_t</a> *s;
<a name="l00089"></a>00089
<a name="l00090"></a>00090 msg = (<a class="code" href="structms__mgau__model__t.html">ms_mgau_model_t</a> *) ckd_calloc(1, <span class="keyword">sizeof</span>(<a class="code" href="structms__mgau__model__t.html">ms_mgau_model_t</a>));
<a name="l00091"></a>00091 msg->config = config;
<a name="l00092"></a>00092 msg-><a class="code" href="structms__mgau__model__t.html#a91027cdb757280ac557668068e6f1b07" title="The codebook.">g</a> = NULL;
<a name="l00093"></a>00093 msg-><a class="code" href="structms__mgau__model__t.html#a551527ce9cd5702d854a1a5600122985" title="The senone.">s</a> = NULL;
<a name="l00094"></a>00094
<a name="l00095"></a>00095 g = msg-><a class="code" href="structms__mgau__model__t.html#a91027cdb757280ac557668068e6f1b07" title="The codebook.">g</a> = gauden_init(cmd_ln_str_r(config, <span class="stringliteral">"-mean"</span>),
<a name="l00096"></a>00096 cmd_ln_str_r(config, <span class="stringliteral">"-var"</span>),
<a name="l00097"></a>00097 cmd_ln_float32_r(config, <span class="stringliteral">"-varfloor"</span>),
<a name="l00098"></a>00098 lmath);
<a name="l00099"></a>00099 s = msg-><a class="code" href="structms__mgau__model__t.html#a551527ce9cd5702d854a1a5600122985" title="The senone.">s</a> = senone_init(msg-><a class="code" href="structms__mgau__model__t.html#a91027cdb757280ac557668068e6f1b07" title="The codebook.">g</a>,
<a name="l00100"></a>00100 cmd_ln_str_r(config, <span class="stringliteral">"-mixw"</span>),
<a name="l00101"></a>00101 cmd_ln_str_r(config, <span class="stringliteral">"-senmgau"</span>),
<a name="l00102"></a>00102 cmd_ln_float32_r(config, <span class="stringliteral">"-mixwfloor"</span>),
<a name="l00103"></a>00103 lmath, mdef);
<a name="l00104"></a>00104
<a name="l00105"></a>00105 s-><a class="code" href="structsenone__t.html#ad9b17f6aecf056fcea0eaaab0c7d35ca" title="Inverse acoustic weight.">aw</a> = cmd_ln_int32_r(config, <span class="stringliteral">"-aw"</span>);
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <span class="comment">/* Verify senone parameters against gauden parameters */</span>
<a name="l00108"></a>00108 <span class="keywordflow">if</span> (s-><a class="code" href="structsenone__t.html#a6a0aa50b8ff66e06f7305d1c8e4a17be" title="Number feature streams.">n_feat</a> != g-><a class="code" href="structgauden__t.html#a6dea221962b4a278dbae4806925a7be0" title="Number feature streams in each codebook.">n_feat</a>)
<a name="l00109"></a>00109 E_FATAL(<span class="stringliteral">"#Feature mismatch: gauden= %d, senone= %d\n"</span>, g-><a class="code" href="structgauden__t.html#a6dea221962b4a278dbae4806925a7be0" title="Number feature streams in each codebook.">n_feat</a>,
<a name="l00110"></a>00110 s-><a class="code" href="structsenone__t.html#a6a0aa50b8ff66e06f7305d1c8e4a17be" title="Number feature streams.">n_feat</a>);
<a name="l00111"></a>00111 <span class="keywordflow">if</span> (s-><a class="code" href="structsenone__t.html#a3c382a37dc9cb650d910bb881c52b336" title="Number codewords per codebook,stream.">n_cw</a> != g-><a class="code" href="structgauden__t.html#ab5104d8fa59bc94b12b36104dd4c19ac" title="Number gaussian densities in each codebook-feature stream.">n_density</a>)
<a name="l00112"></a>00112 E_FATAL(<span class="stringliteral">"#Densities mismatch: gauden= %d, senone= %d\n"</span>,
<a name="l00113"></a>00113 g-><a class="code" href="structgauden__t.html#ab5104d8fa59bc94b12b36104dd4c19ac" title="Number gaussian densities in each codebook-feature stream.">n_density</a>, s-><a class="code" href="structsenone__t.html#a3c382a37dc9cb650d910bb881c52b336" title="Number codewords per codebook,stream.">n_cw</a>);
<a name="l00114"></a>00114 <span class="keywordflow">if</span> (s-><a class="code" href="structsenone__t.html#a71cf7b41b2334216944380296c03c99a" title="Number gaussian density codebooks referred to by senones.">n_gauden</a> > g-><a class="code" href="structgauden__t.html#af15df11bd2f3ab0290e0a33ca15c836c" title="Number codebooks.">n_mgau</a>)
<a name="l00115"></a>00115 E_FATAL(<span class="stringliteral">"Senones need more codebooks (%d) than present (%d)\n"</span>,
<a name="l00116"></a>00116 s-><a class="code" href="structsenone__t.html#a71cf7b41b2334216944380296c03c99a" title="Number gaussian density codebooks referred to by senones.">n_gauden</a>, g-><a class="code" href="structgauden__t.html#af15df11bd2f3ab0290e0a33ca15c836c" title="Number codebooks.">n_mgau</a>);
<a name="l00117"></a>00117 <span class="keywordflow">if</span> (s-><a class="code" href="structsenone__t.html#a71cf7b41b2334216944380296c03c99a" title="Number gaussian density codebooks referred to by senones.">n_gauden</a> < g-><a class="code" href="structgauden__t.html#af15df11bd2f3ab0290e0a33ca15c836c" title="Number codebooks.">n_mgau</a>)
<a name="l00118"></a>00118 E_ERROR(<span class="stringliteral">"Senones use fewer codebooks (%d) than present (%d)\n"</span>,
<a name="l00119"></a>00119 s-><a class="code" href="structsenone__t.html#a71cf7b41b2334216944380296c03c99a" title="Number gaussian density codebooks referred to by senones.">n_gauden</a>, g-><a class="code" href="structgauden__t.html#af15df11bd2f3ab0290e0a33ca15c836c" title="Number codebooks.">n_mgau</a>);
<a name="l00120"></a>00120
<a name="l00121"></a>00121 msg-><a class="code" href="structms__mgau__model__t.html#a0a67ef79bd74c55734b0944f0d61b668" title="Top-n gaussian will be computed.">topn</a> = cmd_ln_int32_r(config, <span class="stringliteral">"-topn"</span>);
<a name="l00122"></a>00122 E_INFO(<span class="stringliteral">"The value of topn: %d\n"</span>, msg-><a class="code" href="structms__mgau__model__t.html#a0a67ef79bd74c55734b0944f0d61b668" title="Top-n gaussian will be computed.">topn</a>);
<a name="l00123"></a>00123 <span class="keywordflow">if</span> (msg-><a class="code" href="structms__mgau__model__t.html#a0a67ef79bd74c55734b0944f0d61b668" title="Top-n gaussian will be computed.">topn</a> == 0 || msg-><a class="code" href="structms__mgau__model__t.html#a0a67ef79bd74c55734b0944f0d61b668" title="Top-n gaussian will be computed.">topn</a> > msg-><a class="code" href="structms__mgau__model__t.html#a91027cdb757280ac557668068e6f1b07" title="The codebook.">g</a>-><a class="code" href="structgauden__t.html#ab5104d8fa59bc94b12b36104dd4c19ac" title="Number gaussian densities in each codebook-feature stream.">n_density</a>) {
<a name="l00124"></a>00124 E_WARN
<a name="l00125"></a>00125 (<span class="stringliteral">"-topn argument (%d) invalid or > #density codewords (%d); set to latter\n"</span>,
<a name="l00126"></a>00126 msg-><a class="code" href="structms__mgau__model__t.html#a0a67ef79bd74c55734b0944f0d61b668" title="Top-n gaussian will be computed.">topn</a>, msg-><a class="code" href="structms__mgau__model__t.html#a91027cdb757280ac557668068e6f1b07" title="The codebook.">g</a>-><a class="code" href="structgauden__t.html#ab5104d8fa59bc94b12b36104dd4c19ac" title="Number gaussian densities in each codebook-feature stream.">n_density</a>);
<a name="l00127"></a>00127 msg-><a class="code" href="structms__mgau__model__t.html#a0a67ef79bd74c55734b0944f0d61b668" title="Top-n gaussian will be computed.">topn</a> = msg-><a class="code" href="structms__mgau__model__t.html#a91027cdb757280ac557668068e6f1b07" title="The codebook.">g</a>-><a class="code" href="structgauden__t.html#ab5104d8fa59bc94b12b36104dd4c19ac" title="Number gaussian densities in each codebook-feature stream.">n_density</a>;
<a name="l00128"></a>00128 }
<a name="l00129"></a>00129
<a name="l00130"></a>00130 msg->dist = (<a class="code" href="structgauden__dist__t.html" title="Structure to store distance (density) values for a given input observation wrt density values in some...">gauden_dist_t</a> ***)
<a name="l00131"></a>00131 ckd_calloc_3d(g-><a class="code" href="structgauden__t.html#af15df11bd2f3ab0290e0a33ca15c836c" title="Number codebooks.">n_mgau</a>, g-><a class="code" href="structgauden__t.html#a6dea221962b4a278dbae4806925a7be0" title="Number feature streams in each codebook.">n_feat</a>, msg-><a class="code" href="structms__mgau__model__t.html#a0a67ef79bd74c55734b0944f0d61b668" title="Top-n gaussian will be computed.">topn</a>,
<a name="l00132"></a>00132 <span class="keyword">sizeof</span>(<a class="code" href="structgauden__dist__t.html" title="Structure to store distance (density) values for a given input observation wrt density values in some...">gauden_dist_t</a>));
<a name="l00133"></a>00133 msg->mgau_active = ckd_calloc(g-><a class="code" href="structgauden__t.html#af15df11bd2f3ab0290e0a33ca15c836c" title="Number codebooks.">n_mgau</a>, <span class="keyword">sizeof</span>(int8));
<a name="l00134"></a>00134
<a name="l00135"></a>00135 mg = (<a class="code" href="structps__mgau__s.html">ps_mgau_t</a> *)msg;
<a name="l00136"></a>00136 mg-><a class="code" href="structps__mgau__s.html#a931f7cbf334b8ed50b0e1c2803a10c67" title="vtable of mgau functions.">vt</a> = &ms_mgau_funcs;
<a name="l00137"></a>00137 <span class="keywordflow">return</span> mg;
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keywordtype">void</span>
<a name="l00141"></a>00141 ms_mgau_free(<a class="code" href="structps__mgau__s.html">ps_mgau_t</a> * mg)
<a name="l00142"></a>00142 {
<a name="l00143"></a>00143 <a class="code" href="structms__mgau__model__t.html">ms_mgau_model_t</a> *msg = (<a class="code" href="structms__mgau__model__t.html">ms_mgau_model_t</a> *)mg;
<a name="l00144"></a>00144 <span class="keywordflow">if</span> (msg == NULL)
<a name="l00145"></a>00145 <span class="keywordflow">return</span>;
<a name="l00146"></a>00146
<a name="l00147"></a>00147 gauden_free(msg-><a class="code" href="structms__mgau__model__t.html#a91027cdb757280ac557668068e6f1b07" title="The codebook.">g</a>);
<a name="l00148"></a>00148 senone_free(msg-><a class="code" href="structms__mgau__model__t.html#a551527ce9cd5702d854a1a5600122985" title="The senone.">s</a>);
<a name="l00149"></a>00149 ckd_free_3d((<span class="keywordtype">void</span> *) msg->dist);
<a name="l00150"></a>00150 ckd_free(msg->mgau_active);
<a name="l00151"></a>00151 ckd_free(msg);
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="keywordtype">int</span>
<a name="l00155"></a>00155 ms_mgau_mllr_transform(<a class="code" href="structps__mgau__s.html">ps_mgau_t</a> *s,
<a name="l00156"></a>00156 <a class="code" href="structps__mllr__s.html" title="Feature space linear transform structure.">ps_mllr_t</a> *mllr)
<a name="l00157"></a>00157 {
<a name="l00158"></a>00158 <a class="code" href="structms__mgau__model__t.html">ms_mgau_model_t</a> *msg = (<a class="code" href="structms__mgau__model__t.html">ms_mgau_model_t</a> *)s;
<a name="l00159"></a>00159 <span class="keywordflow">return</span> gauden_mllr_transform(msg-><a class="code" href="structms__mgau__model__t.html#a91027cdb757280ac557668068e6f1b07" title="The codebook.">g</a>, mllr, msg->config);
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161
<a name="l00162"></a>00162 int32
<a name="l00163"></a>00163 ms_cont_mgau_frame_eval(<a class="code" href="structps__mgau__s.html">ps_mgau_t</a> * mg,
<a name="l00164"></a>00164 int16 *senscr,
<a name="l00165"></a>00165 uint8 *senone_active,
<a name="l00166"></a>00166 int32 n_senone_active,
<a name="l00167"></a>00167 mfcc_t ** feat,
<a name="l00168"></a>00168 int32 frame,
<a name="l00169"></a>00169 int32 compallsen)
<a name="l00170"></a>00170 {
<a name="l00171"></a>00171 <a class="code" href="structms__mgau__model__t.html">ms_mgau_model_t</a> *msg = (<a class="code" href="structms__mgau__model__t.html">ms_mgau_model_t</a> *)mg;
<a name="l00172"></a>00172 int32 gid;
<a name="l00173"></a>00173 int32 topn;
<a name="l00174"></a>00174 int32 best;
<a name="l00175"></a>00175 <a class="code" href="structgauden__t.html" title="Multivariate gaussian mixture density parameters.">gauden_t</a> *g;
<a name="l00176"></a>00176 <a class="code" href="structsenone__t.html" title="8-bit senone PDF structure.">senone_t</a> *sen;
<a name="l00177"></a>00177
<a name="l00178"></a>00178 topn = ms_mgau_topn(msg);
<a name="l00179"></a>00179 g = ms_mgau_gauden(msg);
<a name="l00180"></a>00180 sen = ms_mgau_senone(msg);
<a name="l00181"></a>00181
<a name="l00182"></a>00182 <span class="keywordflow">if</span> (compallsen) {
<a name="l00183"></a>00183 int32 s;
<a name="l00184"></a>00184
<a name="l00185"></a>00185 <span class="keywordflow">for</span> (gid = 0; gid < g-><a class="code" href="structgauden__t.html#af15df11bd2f3ab0290e0a33ca15c836c" title="Number codebooks.">n_mgau</a>; gid++)
<a name="l00186"></a>00186 <a class="code" href="ms__gauden_8h.html#a68cd25af0a2faf05eacd17afd5407ea4" title="Compute gaussian density values for the given input observation vector wrt the specified mixture gaus...">gauden_dist</a>(g, gid, topn, feat, msg->dist[gid]);
<a name="l00187"></a>00187
<a name="l00188"></a>00188 best = (int32) 0x7fffffff;
<a name="l00189"></a>00189 <span class="keywordflow">for</span> (s = 0; s < sen-><a class="code" href="structsenone__t.html#a769aa6d2fc16b33c0b9a1cbf31592422" title="Number senones in this set.">n_sen</a>; s++) {
<a name="l00190"></a>00190 senscr[s] = <a class="code" href="ms__senone_8h.html#a0ef3f343c1f7a9504a1ceda2d7383000" title="Evaluate the score for the given senone wrt to the given top N gaussian codewords.">senone_eval</a>(sen, s, msg->dist[sen-><a class="code" href="structsenone__t.html#a5f0eee5a11e7c10b20e0cce10305edfc" title="senone-id -&gt; mgau-id mapping for senones in this set">mgau</a>[s]], topn);
<a name="l00191"></a>00191 <span class="keywordflow">if</span> (best > senscr[s]) {
<a name="l00192"></a>00192 best = senscr[s];
<a name="l00193"></a>00193 }
<a name="l00194"></a>00194 }
<a name="l00195"></a>00195
<a name="l00196"></a>00196 <span class="comment">/* Normalize senone scores */</span>
<a name="l00197"></a>00197 <span class="keywordflow">for</span> (s = 0; s < sen-><a class="code" href="structsenone__t.html#a769aa6d2fc16b33c0b9a1cbf31592422" title="Number senones in this set.">n_sen</a>; s++) {
<a name="l00198"></a>00198 int32 bs = senscr[s] - best;
<a name="l00199"></a>00199 <span class="keywordflow">if</span> (bs > 32767)
<a name="l00200"></a>00200 bs = 32767;
<a name="l00201"></a>00201 <span class="keywordflow">if</span> (bs < -32768)
<a name="l00202"></a>00202 bs = -32768;
<a name="l00203"></a>00203 senscr[s] = bs;
<a name="l00204"></a>00204 }
<a name="l00205"></a>00205 }
<a name="l00206"></a>00206 <span class="keywordflow">else</span> {
<a name="l00207"></a>00207 int32 i, n;
<a name="l00208"></a>00208 <span class="comment">/* Flag all active mixture-gaussian codebooks */</span>
<a name="l00209"></a>00209 <span class="keywordflow">for</span> (gid = 0; gid < g-><a class="code" href="structgauden__t.html#af15df11bd2f3ab0290e0a33ca15c836c" title="Number codebooks.">n_mgau</a>; gid++)
<a name="l00210"></a>00210 msg->mgau_active[gid] = 0;
<a name="l00211"></a>00211
<a name="l00212"></a>00212 n = 0;
<a name="l00213"></a>00213 for (i = 0; i < n_senone_active; i++) {
<a name="l00214"></a>00214 <span class="comment">/* senone_active consists of deltas. */</span>
<a name="l00215"></a>00215 int32 s = senone_active[i] + n;
<a name="l00216"></a>00216 msg->mgau_active[sen-><a class="code" href="structsenone__t.html#a5f0eee5a11e7c10b20e0cce10305edfc" title="senone-id -&gt; mgau-id mapping for senones in this set">mgau</a>[s]] = 1;
<a name="l00217"></a>00217 n = s;
<a name="l00218"></a>00218 }
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="comment">/* Compute topn gaussian density values (for active codebooks) */</span>
<a name="l00221"></a>00221 <span class="keywordflow">for</span> (gid = 0; gid < g-><a class="code" href="structgauden__t.html#af15df11bd2f3ab0290e0a33ca15c836c" title="Number codebooks.">n_mgau</a>; gid++) {
<a name="l00222"></a>00222 <span class="keywordflow">if</span> (msg->mgau_active[gid])
<a name="l00223"></a>00223 <a class="code" href="ms__gauden_8h.html#a68cd25af0a2faf05eacd17afd5407ea4" title="Compute gaussian density values for the given input observation vector wrt the specified mixture gaus...">gauden_dist</a>(g, gid, topn, feat, msg->dist[gid]);
<a name="l00224"></a>00224 }
<a name="l00225"></a>00225
<a name="l00226"></a>00226 best = (int32) 0x7fffffff;
<a name="l00227"></a>00227 n = 0;
<a name="l00228"></a>00228 <span class="keywordflow">for</span> (i = 0; i < n_senone_active; i++) {
<a name="l00229"></a>00229 int32 s = senone_active[i] + n;
<a name="l00230"></a>00230 senscr[s] = <a class="code" href="ms__senone_8h.html#a0ef3f343c1f7a9504a1ceda2d7383000" title="Evaluate the score for the given senone wrt to the given top N gaussian codewords.">senone_eval</a>(sen, s, msg->dist[sen-><a class="code" href="structsenone__t.html#a5f0eee5a11e7c10b20e0cce10305edfc" title="senone-id -&gt; mgau-id mapping for senones in this set">mgau</a>[s]], topn);
<a name="l00231"></a>00231 <span class="keywordflow">if</span> (best > senscr[s]) {
<a name="l00232"></a>00232 best = senscr[s];
<a name="l00233"></a>00233 }
<a name="l00234"></a>00234 n = s;
<a name="l00235"></a>00235 }
<a name="l00236"></a>00236
<a name="l00237"></a>00237 <span class="comment">/* Normalize senone scores */</span>
<a name="l00238"></a>00238 n = 0;
<a name="l00239"></a>00239 <span class="keywordflow">for</span> (i = 0; i < n_senone_active; i++) {
<a name="l00240"></a>00240 int32 s = senone_active[i] + n;
<a name="l00241"></a>00241 int32 bs = senscr[s] - best;
<a name="l00242"></a>00242 <span class="keywordflow">if</span> (bs > 32767)
<a name="l00243"></a>00243 bs = 32767;
<a name="l00244"></a>00244 <span class="keywordflow">if</span> (bs < -32768)
<a name="l00245"></a>00245 bs = -32768;
<a name="l00246"></a>00246 senscr[s] = bs;
<a name="l00247"></a>00247 n = s;
<a name="l00248"></a>00248 }
<a name="l00249"></a>00249 }
<a name="l00250"></a>00250
<a name="l00251"></a>00251 <span class="keywordflow">return</span> 0;
<a name="l00252"></a>00252 }
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