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

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<h1>include/sphinxbase/cont_ad.h</h1>  </div>
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<a href="cont__ad_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) 1999-2001 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"> * cont_ad.h -- Continuous A/D listening and silence filtering module.</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) 1996 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"> * </span>
<a name="l00049"></a>00049 <span class="comment"> * 13-Jul-98    M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University</span>
<a name="l00050"></a>00050 <span class="comment"> *              Added spf and adbufsize to cont_ad_t in order to support variable</span>
<a name="l00051"></a>00051 <span class="comment"> *              frame sizes depending on audio sampling rate.</span>
<a name="l00052"></a>00052 <span class="comment"> * </span>
<a name="l00053"></a>00053 <span class="comment"> * 30-Jun-98    M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University</span>
<a name="l00054"></a>00054 <span class="comment"> *              Added FILE* argument to cont_ad_powhist_dump().</span>
<a name="l00055"></a>00055 <span class="comment"> * </span>
<a name="l00056"></a>00056 <span class="comment"> * 16-Jan-98    Paul Placeway (pwp@cs.cmu.edu) at Carnegie Mellon University</span>
<a name="l00057"></a>00057 <span class="comment"> *              Changed to use dB instead of the weird power measure.</span>
<a name="l00058"></a>00058 <span class="comment"> *              Added most system parameters to cont_ad_t instead of hardwiring</span>
<a name="l00059"></a>00059 <span class="comment"> *              them in cont_ad.c.</span>
<a name="l00060"></a>00060 <span class="comment"> *              Added cont_ad_set_params() and cont_ad_get_params().</span>
<a name="l00061"></a>00061 <span class="comment"> * </span>
<a name="l00062"></a>00062 <span class="comment"> * 28-Jul-96    M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University</span>
<a name="l00063"></a>00063 <span class="comment"> *              Added cont_ad_t.siglvl.</span>
<a name="l00064"></a>00064 <span class="comment"> * </span>
<a name="l00065"></a>00065 <span class="comment"> * 27-Jun-96    M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University</span>
<a name="l00066"></a>00066 <span class="comment"> *              Added the option for cont_ad_read to return -1 on EOF.</span>
<a name="l00067"></a>00067 <span class="comment"> * </span>
<a name="l00068"></a>00068 <span class="comment"> * 21-Jun-96    M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University</span>
<a name="l00069"></a>00069 <span class="comment"> *              Added cont_ad_set_thresh().</span>
<a name="l00070"></a>00070 <span class="comment"> * </span>
<a name="l00071"></a>00071 <span class="comment"> * 20-Jun-96    M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University</span>
<a name="l00072"></a>00072 <span class="comment"> *              Separated thresholds for speech and silence.</span>
<a name="l00073"></a>00073 <span class="comment"> * </span>
<a name="l00074"></a>00074 <span class="comment"> * 17-Jun-96    M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University</span>
<a name="l00075"></a>00075 <span class="comment"> *              Created, based loosely on Steve Reed&#39;s original implementation.</span>
<a name="l00076"></a>00076 <span class="comment"> */</span>
<a name="l00077"></a>00077 
<a name="l00078"></a>00078 
<a name="l00079"></a>00079 <span class="preprocessor">#ifndef _CONT_AD_H_</span>
<a name="l00080"></a>00080 <span class="preprocessor"></span><span class="preprocessor">#define _CONT_AD_H_</span>
<a name="l00081"></a>00081 <span class="preprocessor"></span>
<a name="l00082"></a>00082 <span class="comment">/* Win32/WinCE DLL gunk */</span>
<a name="l00083"></a>00083 <span class="preprocessor">#include &lt;sphinxbase/sphinxbase_export.h&gt;</span>
<a name="l00084"></a>00084 <span class="preprocessor">#include &lt;sphinxbase/prim_type.h&gt;</span>
<a name="l00085"></a>00085 <span class="preprocessor">#include &lt;sphinxbase/ad.h&gt;</span>
<a name="l00086"></a>00086 
<a name="l00114"></a>00114 <span class="preprocessor">#include &lt;stdio.h&gt;</span>
<a name="l00115"></a>00115 
<a name="l00116"></a>00116 
<a name="l00117"></a>00117 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00118"></a>00118 <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {
<a name="l00119"></a>00119 <span class="preprocessor">#endif</span>
<a name="l00120"></a>00120 <span class="preprocessor"></span><span class="preprocessor">#if 0</span>
<a name="l00121"></a>00121 <span class="preprocessor"></span><span class="comment">/* Fool Emacs. */</span>
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123 <span class="preprocessor">#endif</span>
<a name="l00124"></a>00124 <span class="preprocessor"></span>
<a name="l00125"></a>00125 <span class="comment">/* States of continuous listening module */</span>
<a name="l00126"></a>00126 <span class="preprocessor">#define CONT_AD_STATE_SIL       0</span>
<a name="l00127"></a>00127 <span class="preprocessor"></span><span class="preprocessor">#define CONT_AD_STATE_SPEECH    1</span>
<a name="l00128"></a>00128 <span class="preprocessor"></span>
<a name="l00129"></a>00129 
<a name="l00135"></a><a class="code" href="structspseg__s.html">00135</a> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structspseg__s.html">spseg_s</a> {
<a name="l00136"></a><a class="code" href="structspseg__s.html#a0f62769ff904df2d374b9500a210374f">00136</a>     int32 <a class="code" href="structspseg__s.html#a0f62769ff904df2d374b9500a210374f" title="Frame-id in adbuf (see below) of start of this segment.">startfrm</a>;     
<a name="l00137"></a><a class="code" href="structspseg__s.html#a91271dd1e4a57bfe1c468e216f7dd42f">00137</a>     int32 <a class="code" href="structspseg__s.html#a91271dd1e4a57bfe1c468e216f7dd42f" title="Number of frames in segment (may wrap around adbuf)">nfrm</a>;         
<a name="l00138"></a><a class="code" href="structspseg__s.html#aec01e1c543395710d3510e18f0938b1a">00138</a>     <span class="keyword">struct </span><a class="code" href="structspseg__s.html">spseg_s</a> *<a class="code" href="structspseg__s.html#aec01e1c543395710d3510e18f0938b1a" title="Next speech segment (with some intervening silence)">next</a>;       
<a name="l00139"></a>00139 } <a class="code" href="structspseg__t.html" title="(FOR INTERNAL USE ) Data structure for maintaining speech (non-silence) segments not yet consumed by ...">spseg_t</a>;
<a name="l00140"></a>00140 
<a name="l00141"></a>00141 
<a name="l00151"></a><a class="code" href="structcont__ad__t.html">00151</a> <span class="keyword">typedef</span> <span class="keyword">struct </span>{
<a name="l00152"></a>00152     <span class="comment">/* Function to be called for obtaining A/D data (see prototype for ad_read in ad.h) */</span>
<a name="l00153"></a>00153     int32 (*adfunc)(<a class="code" href="structad__rec__t.html">ad_rec_t</a> *ad, int16 *buf, int32 max);
<a name="l00154"></a><a class="code" href="structcont__ad__t.html#aae5b9d977e62424b0cf0e245485b20a0">00154</a>     <a class="code" href="structad__rec__t.html">ad_rec_t</a> *ad;       
<a name="l00156"></a><a class="code" href="structcont__ad__t.html#a7726e8ea1bcca281a39c4b27bbb115e3">00156</a>     int32 <a class="code" href="structcont__ad__t.html#a7726e8ea1bcca281a39c4b27bbb115e3" title="Pass all input data through, without filtering silence.">rawmode</a>;      
<a name="l00158"></a><a class="code" href="structcont__ad__t.html#a719f5c6816cd0da0a31930a2e572b933">00158</a>     int16 *<a class="code" href="structcont__ad__t.html#a719f5c6816cd0da0a31930a2e572b933" title="Circular buffer for maintaining A/D data read until consumed.">adbuf</a>;       
<a name="l00160"></a>00160     <span class="comment">/* **************************************************************************</span>
<a name="l00161"></a>00161 <span class="comment">     * state, read_ts, and siglvl are provided for READ-ONLY use by client</span>
<a name="l00162"></a>00162 <span class="comment">     * applications, and are updated by calls to cont_ad_read() (see below).  All</span>
<a name="l00163"></a>00163 <span class="comment">     * other variables should be left alone.</span>
<a name="l00164"></a>00164 <span class="comment">     */</span>
<a name="l00165"></a><a class="code" href="structcont__ad__t.html#a5d9420ea711733d1eea9b8f29a638fdb">00165</a>     int32 state;        
<a name="l00167"></a><a class="code" href="structcont__ad__t.html#a7b71e87abfcb3ca4ae73af34c86f955e">00167</a>     int32 read_ts;      
<a name="l00171"></a><a class="code" href="structcont__ad__t.html#a478939247e09a8ae142c8996ec17d8c8">00171</a>     int32 seglen;       
<a name="l00175"></a><a class="code" href="structcont__ad__t.html#a5524c052dcd0a3d1a1c3b1fc2134b62e">00175</a>     int32 siglvl;       
<a name="l00178"></a>00178     <span class="comment">/* ************************************************************************ */</span>
<a name="l00179"></a>00179     
<a name="l00180"></a><a class="code" href="structcont__ad__t.html#a11a4bb48870007b39f8fa46e4b8f111a">00180</a>     int32 sps;          
<a name="l00183"></a><a class="code" href="structcont__ad__t.html#af7b9044b76ed3b86ce74e4e7215ca4c3">00183</a>     int32 <a class="code" href="structcont__ad__t.html#af7b9044b76ed3b86ce74e4e7215ca4c3" title="Whether the source ad device has encountered EOF.">eof</a>;          
<a name="l00185"></a><a class="code" href="structcont__ad__t.html#a55f701abf33b5f68f9ef4cbf95dfaf73">00185</a>     int32 <a class="code" href="structcont__ad__t.html#a55f701abf33b5f68f9ef4cbf95dfaf73" title="Samples/frame; audio level is analyzed within frames.">spf</a>;          
<a name="l00186"></a><a class="code" href="structcont__ad__t.html#a5c6edc6be287f3ae013c59fef90cb4bd">00186</a>     int32 <a class="code" href="structcont__ad__t.html#a5c6edc6be287f3ae013c59fef90cb4bd" title="Buffer size (Number of samples)">adbufsize</a>;    
<a name="l00187"></a><a class="code" href="structcont__ad__t.html#a54e2013d9634ec473aaf79a606fb2e0f">00187</a>     int32 <a class="code" href="structcont__ad__t.html#a54e2013d9634ec473aaf79a606fb2e0f" title="For pre-emphasis filter.">prev_sample</a>;  
<a name="l00188"></a><a class="code" href="structcont__ad__t.html#aa0617a92c549ac916258a54ec2cdc756">00188</a>     int32 <a class="code" href="structcont__ad__t.html#aa0617a92c549ac916258a54ec2cdc756" title="Frame number in adbuf with unconsumed A/D data.">headfrm</a>;      
<a name="l00189"></a><a class="code" href="structcont__ad__t.html#abed5c6e9a2e078b70fc4c30b667612b2">00189</a>     int32 <a class="code" href="structcont__ad__t.html#abed5c6e9a2e078b70fc4c30b667612b2" title="Number of complete frames of unconsumed A/D data in adbuf.">n_frm</a>;        
<a name="l00190"></a><a class="code" href="structcont__ad__t.html#a7ae5362560d9edfa6c16555285487a7a">00190</a>     int32 <a class="code" href="structcont__ad__t.html#a7ae5362560d9edfa6c16555285487a7a" title="Number of samples of unconsumed data in adbuf.">n_sample</a>;     
<a name="l00191"></a><a class="code" href="structcont__ad__t.html#a4ed32427e6a785b571b1346c85481899">00191</a>     int32 <a class="code" href="structcont__ad__t.html#a4ed32427e6a785b571b1346c85481899" title="Total number of frames of A/D data read, including consumed ones.">tot_frm</a>;      
<a name="l00192"></a><a class="code" href="structcont__ad__t.html#af60b0f78f9959a25cf7e7bf4c4aab4d7">00192</a>     int32 <a class="code" href="structcont__ad__t.html#af60b0f78f9959a25cf7e7bf4c4aab4d7" title="PWP: what we claim as the &amp;quot;current&amp;quot; noise level.">noise_level</a>;  
<a name="l00194"></a><a class="code" href="structcont__ad__t.html#a01f61a105019bea12533db84351d07b9">00194</a>     int32 *<a class="code" href="structcont__ad__t.html#a01f61a105019bea12533db84351d07b9" title="Histogram of frame power, moving window, decayed.">pow_hist</a>;    
<a name="l00195"></a><a class="code" href="structcont__ad__t.html#a18f146239c77ff4ca6157261acdf4083">00195</a>     <span class="keywordtype">char</span> *<a class="code" href="structcont__ad__t.html#a18f146239c77ff4ca6157261acdf4083" title="Frame power.">frm_pow</a>;      
<a name="l00197"></a><a class="code" href="structcont__ad__t.html#a9e23379bf649ee06ece20133316253e5">00197</a>     int32 <a class="code" href="structcont__ad__t.html#a9e23379bf649ee06ece20133316253e5" title="Do automatic threshold adjustment or not.">auto_thresh</a>;  
<a name="l00198"></a><a class="code" href="structcont__ad__t.html#a74a6f56fb4cbde7fc789c9b463cf2f8f">00198</a>     int32 <a class="code" href="structcont__ad__t.html#a74a6f56fb4cbde7fc789c9b463cf2f8f" title="Max silence power/frame ABOVE noise level.">delta_sil</a>;    
<a name="l00199"></a><a class="code" href="structcont__ad__t.html#afca0f69a21d9f28c9610fcefc0e7cb10">00199</a>     int32 <a class="code" href="structcont__ad__t.html#afca0f69a21d9f28c9610fcefc0e7cb10" title="Min speech power/frame ABOVE noise level.">delta_speech</a>; 
<a name="l00200"></a><a class="code" href="structcont__ad__t.html#ac301114b24356aef2edccba155e3cf33">00200</a>     int32 <a class="code" href="structcont__ad__t.html#ac301114b24356aef2edccba155e3cf33" title="noise lower than this we ignore">min_noise</a>;    
<a name="l00201"></a><a class="code" href="structcont__ad__t.html#af3b50663565964bb18ebb9f9e0002421">00201</a>     int32 <a class="code" href="structcont__ad__t.html#af3b50663565964bb18ebb9f9e0002421" title="noise higher than this signals an error">max_noise</a>;    
<a name="l00202"></a><a class="code" href="structcont__ad__t.html#a7c61513f48e8fbc9ab6b57db66dad7b9">00202</a>     int32 <a class="code" href="structcont__ad__t.html#a7c61513f48e8fbc9ab6b57db66dad7b9" title="how many frames to look at for speech det">winsize</a>;      
<a name="l00203"></a><a class="code" href="structcont__ad__t.html#a1b0bb7e53a2bf537ed362badddca341b">00203</a>     int32 <a class="code" href="structcont__ad__t.html#a1b0bb7e53a2bf537ed362badddca341b" title="start speech on &amp;gt;= these many frames out of winsize, of &amp;gt;= delta_speech">speech_onset</a>; 
<a name="l00204"></a><a class="code" href="structcont__ad__t.html#a9f5e138f4b79b59bf4daa5603d171165">00204</a>     int32 <a class="code" href="structcont__ad__t.html#a9f5e138f4b79b59bf4daa5603d171165" title="end speech on &amp;gt;= these many frames out of winsize, of &amp;lt;= delta_sil">sil_onset</a>;    
<a name="l00205"></a><a class="code" href="structcont__ad__t.html#a0d42e3ac6c1e5c59c86a40f4cf26a861">00205</a>     int32 <a class="code" href="structcont__ad__t.html#a0d42e3ac6c1e5c59c86a40f4cf26a861" title="pad beggining of speech with this many extra frms">leader</a>;       
<a name="l00206"></a><a class="code" href="structcont__ad__t.html#aa15db1e9fbb0048225521555ab8d9388">00206</a>     int32 <a class="code" href="structcont__ad__t.html#aa15db1e9fbb0048225521555ab8d9388" title="pad end of speech with this many extra frms">trailer</a>;      
<a name="l00208"></a><a class="code" href="structcont__ad__t.html#a0b9333d9acc41b5bfb67f69fc22ca901">00208</a>     int32 thresh_speech;
<a name="l00210"></a><a class="code" href="structcont__ad__t.html#adbbe28dca87d06a3ca8d2390d08ea83a">00210</a>     int32 thresh_sil;   
<a name="l00212"></a><a class="code" href="structcont__ad__t.html#a2168183b25add085cf3aa29ddab1c8ce">00212</a>     int32 <a class="code" href="structcont__ad__t.html#a2168183b25add085cf3aa29ddab1c8ce" title="Number of frames before next update to pow_hist/thresholds.">thresh_update</a>;
<a name="l00213"></a><a class="code" href="structcont__ad__t.html#ac22395096037175bf9a0a1f6877e5ec5">00213</a>     float32 adapt_rate; 
<a name="l00217"></a><a class="code" href="structcont__ad__t.html#ae52185e7f7dfe424060c0ff562a8858b">00217</a>     int32 tail_state;   
<a name="l00220"></a><a class="code" href="structcont__ad__t.html#a75bc7d23bfedfd79a2fd1e3ea2188e4c">00220</a>     int32 <a class="code" href="structcont__ad__t.html#a75bc7d23bfedfd79a2fd1e3ea2188e4c" title="Where next analysis window begins.">win_startfrm</a>; 
<a name="l00221"></a><a class="code" href="structcont__ad__t.html#a14ee16922e7287ad4ce8c51c6ddb74fc">00221</a>     int32 <a class="code" href="structcont__ad__t.html#a14ee16922e7287ad4ce8c51c6ddb74fc" title="Number of frames currently available from win_startfrm for analysis.">win_validfrm</a>; 
<a name="l00222"></a><a class="code" href="structcont__ad__t.html#a628e5b444bde5e0eb0dc7fe8731a31a6">00222</a>     int32 n_other;      
<a name="l00224"></a><a class="code" href="structcont__ad__t.html#abffe61140bc2a02ae4222183b3ef6159">00224</a>     <a class="code" href="structspseg__t.html" title="(FOR INTERNAL USE ) Data structure for maintaining speech (non-silence) segments not yet consumed by ...">spseg_t</a> *<a class="code" href="structcont__ad__t.html#abffe61140bc2a02ae4222183b3ef6159" title="First of unconsumed speech segments.">spseg_head</a>;
<a name="l00225"></a><a class="code" href="structcont__ad__t.html#ac77e8f8bd27cea3b99238d9663455972">00225</a>     <a class="code" href="structspseg__t.html" title="(FOR INTERNAL USE ) Data structure for maintaining speech (non-silence) segments not yet consumed by ...">spseg_t</a> *<a class="code" href="structcont__ad__t.html#ac77e8f8bd27cea3b99238d9663455972" title="Last of unconsumed speech segments.">spseg_tail</a>;
<a name="l00227"></a><a class="code" href="structcont__ad__t.html#af8cd2a7e0ef0f4e2c825c7812a091f9c">00227</a>     FILE *rawfp;        
<a name="l00231"></a><a class="code" href="structcont__ad__t.html#adbbb6765386309476549beb058a235c5">00231</a>     FILE *logfp;        
<a name="l00236"></a><a class="code" href="structcont__ad__t.html#ac6e6809727ddc78a13674478d5b527db">00236</a>     int32 <a class="code" href="structcont__ad__t.html#ac6e6809727ddc78a13674478d5b527db" title="Number of frames of calibration data seen so far.">n_calib_frame</a>; 
<a name="l00237"></a>00237 } <a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a>;
<a name="l00238"></a>00238 
<a name="l00239"></a>00239 
<a name="l00255"></a>00255 SPHINXBASE_EXPORT
<a name="l00256"></a>00256 <a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *<a class="code" href="cont__ad_8h.html#af28bf56f17d5cfebf4d960ebed44ca64" title="Initialize a continuous listening/silence filtering object.">cont_ad_init</a> (<a class="code" href="structad__rec__t.html">ad_rec_t</a> *ad,  
<a name="l00257"></a>00257                          int32 (*adfunc)(<a class="code" href="structad__rec__t.html">ad_rec_t</a> *ad, int16 *buf, int32 max)
<a name="l00261"></a>00261                          );
<a name="l00262"></a>00262 
<a name="l00269"></a>00269 SPHINXBASE_EXPORT
<a name="l00270"></a>00270 <a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *<a class="code" href="cont__ad_8h.html#a1a9bbf961917827f5d03adcd409dda35" title="Initializes a continuous listening object which simply passes data through (!)">cont_ad_init_rawmode</a> (<a class="code" href="structad__rec__t.html">ad_rec_t</a> *ad,
<a name="l00271"></a>00271                                  int32 (*adfunc)(<a class="code" href="structad__rec__t.html">ad_rec_t</a> *ad, int16 *buf, int32 max));
<a name="l00272"></a>00272 
<a name="l00273"></a>00273 
<a name="l00302"></a>00302 SPHINXBASE_EXPORT
<a name="l00303"></a>00303 int32 <a class="code" href="cont__ad_8h.html#ae664132adc514db01a1d5c1209ded4ba" title="Read raw audio data into the silence filter.">cont_ad_read</a> (<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *r,       
<a name="l00304"></a>00304                     int16 *buf,         
<a name="l00307"></a>00307                     int32 max           
<a name="l00310"></a>00310         );
<a name="l00311"></a>00311 
<a name="l00315"></a>00315 SPHINXBASE_EXPORT
<a name="l00316"></a>00316 int32 <a class="code" href="cont__ad_8h.html#a680721acc14ac191bbae3a4940ed357d" title="Get the maximum number of samples which can be passed into cont_ad_read().">cont_ad_buffer_space</a>(<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *r);
<a name="l00317"></a>00317 
<a name="l00330"></a>00330 SPHINXBASE_EXPORT
<a name="l00331"></a>00331 int32 <a class="code" href="cont__ad_8h.html#a7a1d0eaf8292a4549b00a97163999321" title="Calibrate the silence filter.">cont_ad_calib</a> (<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *cont    
<a name="l00332"></a>00332                      );
<a name="l00333"></a>00333 
<a name="l00345"></a>00345 SPHINXBASE_EXPORT
<a name="l00346"></a>00346 int32 <a class="code" href="cont__ad_8h.html#a8a575044cf22d96a5ec8fb20410b0065" title="Calibrate the silence filter without an audio device.">cont_ad_calib_loop</a> (<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *r, int16 *buf, int32 max); 
<a name="l00347"></a>00347 
<a name="l00359"></a>00359 SPHINXBASE_EXPORT
<a name="l00360"></a>00360 int32 <a class="code" href="cont__ad_8h.html#a6a86e16fb673748be753e2a281ce837a" title="Get the number of samples required to calibrate the silence filter.">cont_ad_calib_size</a>(<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *r);
<a name="l00361"></a>00361 
<a name="l00374"></a>00374 SPHINXBASE_EXPORT
<a name="l00375"></a>00375 int32 <a class="code" href="cont__ad_8h.html#af9a8f9f66bbfd1ce48fe9366fafcc40d" title="Set silence and speech threshold parameters.">cont_ad_set_thresh</a> (<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *cont,      
<a name="l00376"></a>00376                           int32 sil,    
<a name="l00377"></a>00377                           int32 sp      
<a name="l00378"></a>00378                           );
<a name="l00379"></a>00379 
<a name="l00380"></a>00380 
<a name="l00388"></a>00388 SPHINXBASE_EXPORT
<a name="l00389"></a>00389 int32 <a class="code" href="cont__ad_8h.html#aa402397c575922ea352afe5e66c02a34" title="Set the changable parameters.">cont_ad_set_params</a> (<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *r, int32 delta_sil, int32 delta_speech,
<a name="l00390"></a>00390                           int32 min_noise, int32 max_noise,
<a name="l00391"></a>00391                           int32 winsize, int32 speech_onset, int32 sil_onset,
<a name="l00392"></a>00392                           int32 leader, int32 trailer,
<a name="l00393"></a>00393                           float32 adapt_rate);
<a name="l00394"></a>00394 
<a name="l00402"></a>00402 SPHINXBASE_EXPORT
<a name="l00403"></a>00403 int32 <a class="code" href="cont__ad_8h.html#aedd013bc2c6aca14fba02049ed7645d7" title="PWP 1/14/98 -- get the changable params.">cont_ad_get_params</a> (<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *r, int32 *delta_sil, int32 *delta_speech,
<a name="l00404"></a>00404                           int32 *min_noise, int32 *max_noise,
<a name="l00405"></a>00405                           int32 *winsize, int32 *speech_onset, int32 *sil_onset,
<a name="l00406"></a>00406                           int32 *leader, int32 *trailer,
<a name="l00407"></a>00407                           float32 *adapt_rate);
<a name="l00408"></a>00408 
<a name="l00413"></a>00413 SPHINXBASE_EXPORT
<a name="l00414"></a>00414 int32 <a class="code" href="cont__ad_8h.html#a12a017ea8a96dc54445e937bb9de24ae" title="Reset, discarding any accumulated speech segments.">cont_ad_reset</a> (<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *cont);  <span class="comment">/* In: Object pointer from cont_ad_init */</span>
<a name="l00415"></a>00415 
<a name="l00416"></a>00416 
<a name="l00420"></a>00420 SPHINXBASE_EXPORT
<a name="l00421"></a>00421 int32 <a class="code" href="cont__ad_8h.html#a381c3df971d43a20e8e8b8da43d2872d" title="Close the continuous listening object.">cont_ad_close</a> (<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *cont);  <span class="comment">/* In: Object pointer from cont_ad_init */</span>
<a name="l00422"></a>00422 
<a name="l00423"></a>00423 
<a name="l00427"></a>00427 SPHINXBASE_EXPORT
<a name="l00428"></a>00428 <span class="keywordtype">void</span> <a class="code" href="cont__ad_8h.html#a288394cd94a4992bec9d3911cc875767" title="Dump the power histogram.">cont_ad_powhist_dump</a> (FILE *fp, <a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *cont);
<a name="l00429"></a>00429 
<a name="l00430"></a>00430 
<a name="l00435"></a>00435 SPHINXBASE_EXPORT
<a name="l00436"></a>00436 int32 <a class="code" href="cont__ad_8h.html#a8f8284f329d1c0e04856ec9d13020dc4" title="Detach the given continuous listening module from the associated audio device.">cont_ad_detach</a> (<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *c);
<a name="l00437"></a>00437 
<a name="l00438"></a>00438 
<a name="l00444"></a>00444 SPHINXBASE_EXPORT
<a name="l00445"></a>00445 int32 <a class="code" href="cont__ad_8h.html#a41e7f8c5925dba26dd51e8f7a3d16404" title="Attach the continuous listening module to the given audio device/function.">cont_ad_attach</a> (<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *c, <a class="code" href="structad__rec__t.html">ad_rec_t</a> *a, int32 (*func)(<a class="code" href="structad__rec__t.html">ad_rec_t</a> *, int16 *, int32));
<a name="l00446"></a>00446 
<a name="l00447"></a>00447 
<a name="l00459"></a>00459 SPHINXBASE_EXPORT
<a name="l00460"></a>00460 int32 <a class="code" href="cont__ad_8h.html#a662ed7c409479060e3b5ac8eb7bd1865" title="Set a file for dumping raw audio input.">cont_ad_set_rawfp</a> (<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *c,  <span class="comment">/* The cont_ad object being addressed */</span>
<a name="l00461"></a>00461                          FILE *fp);     <span class="comment">/* File to which raw audio data is to</span>
<a name="l00462"></a>00462 <span class="comment">                                           be dumped; NULL to stop dumping. */</span>
<a name="l00463"></a>00463 
<a name="l00471"></a>00471 SPHINXBASE_EXPORT
<a name="l00472"></a>00472 int32 <a class="code" href="cont__ad_8h.html#a16c5810eb19ed89522ef4c3394bbfe83" title="Set the file to which cont_ad logs its progress.">cont_ad_set_logfp</a> (<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *c,  <span class="comment">/* The cont_ad object being addressed */</span>
<a name="l00473"></a>00473                          FILE *fp);     <span class="comment">/* File to which logs are written;</span>
<a name="l00474"></a>00474 <span class="comment">                                           NULL to stop logging. */</span>
<a name="l00475"></a>00475 
<a name="l00484"></a>00484 SPHINXBASE_EXPORT
<a name="l00485"></a>00485 int32 <a class="code" href="cont__ad_8h.html#a382fe6375eae57a532c524d68bc3dd24" title="Set the silence and speech thresholds.">cont_set_thresh</a>(<a class="code" href="structcont__ad__t.html" title="Continuous listening module or object Continuous listening module or object.">cont_ad_t</a> *r, int32 silence, int32 speech);
<a name="l00486"></a>00486 
<a name="l00487"></a>00487 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00488"></a>00488 <span class="preprocessor"></span>}
<a name="l00489"></a>00489 <span class="preprocessor">#endif</span>
<a name="l00490"></a>00490 <span class="preprocessor"></span>
<a name="l00491"></a>00491 
<a name="l00492"></a>00492 <span class="preprocessor">#endif</span>
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