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<h1>include/sphinxbase/yin.h</h1> </div>
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<a href="yin_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) 2008 Beyond Access, Inc. All rights reserved.</span>
<a name="l00004"></a>00004 <span class="comment"> * </span>
<a name="l00005"></a>00005 <span class="comment"> * Redistribution and use in source and binary forms, with or without</span>
<a name="l00006"></a>00006 <span class="comment"> * modification, are permitted provided that the following conditions</span>
<a name="l00007"></a>00007 <span class="comment"> * are met:</span>
<a name="l00008"></a>00008 <span class="comment"> * </span>
<a name="l00009"></a>00009 <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span>
<a name="l00010"></a>00010 <span class="comment"> * notice, this list of conditions and the following disclaimer. </span>
<a name="l00011"></a>00011 <span class="comment"> * </span>
<a name="l00012"></a>00012 <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright</span>
<a name="l00013"></a>00013 <span class="comment"> * notice, this list of conditions and the following disclaimer in</span>
<a name="l00014"></a>00014 <span class="comment"> * the documentation and/or other materials provided with the</span>
<a name="l00015"></a>00015 <span class="comment"> * distribution.</span>
<a name="l00016"></a>00016 <span class="comment"> * </span>
<a name="l00017"></a>00017 <span class="comment"> * THIS SOFTWARE IS PROVIDED BY BEYOND ACCESS, INC. ``AS IS'' AND ANY</span>
<a name="l00018"></a>00018 <span class="comment"> * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span>
<a name="l00019"></a>00019 <span class="comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR</span>
<a name="l00020"></a>00020 <span class="comment"> * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BEYOND ACCESS, INC. NOR</span>
<a name="l00021"></a>00021 <span class="comment"> * ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</span>
<a name="l00022"></a>00022 <span class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,</span>
<a name="l00023"></a>00023 <span class="comment"> * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR</span>
<a name="l00024"></a>00024 <span class="comment"> * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF</span>
<a name="l00025"></a>00025 <span class="comment"> * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING</span>
<a name="l00026"></a>00026 <span class="comment"> * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS</span>
<a name="l00027"></a>00027 <span class="comment"> * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00028"></a>00028 <span class="comment"> */</span>
<a name="l00029"></a>00029
<a name="l00042"></a>00042 <span class="preprocessor">#ifndef __YIN_H__</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span><span class="preprocessor">#define __YIN_H__</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span>
<a name="l00045"></a>00045 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">"C"</span>
<a name="l00047"></a>00047 <span class="preprocessor">#endif</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span><span class="preprocessor">#if 0</span>
<a name="l00049"></a>00049 <span class="preprocessor"></span>} <span class="comment">/* Fool Emacs. */</span>
<a name="l00050"></a>00050 <span class="preprocessor">#endif</span>
<a name="l00051"></a>00051 <span class="preprocessor"></span>
<a name="l00052"></a>00052 <span class="comment">/* Win32/WinCE DLL gunk */</span>
<a name="l00053"></a>00053 <span class="preprocessor">#include <sphinxbase/sphinxbase_export.h></span>
<a name="l00054"></a>00054 <span class="preprocessor">#include <sphinxbase/prim_type.h></span>
<a name="l00055"></a>00055
<a name="l00059"></a><a class="code" href="yin_8h.html#a69a22f00f601c099b232e01b94704c2c">00059</a> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structyin__s.html">yin_s</a> <a class="code" href="structyin__s.html">yin_t</a>;
<a name="l00060"></a>00060
<a name="l00064"></a>00064 SPHINXBASE_EXPORT
<a name="l00065"></a>00065 <a class="code" href="structyin__s.html">yin_t</a> *<a class="code" href="yin_8h.html#afc3a955f8d2215ed3d660737643c4f32" title="Initialize moving-window pitch estimation.">yin_init</a>(<span class="keywordtype">int</span> frame_size, <span class="keywordtype">float</span> <a class="code" href="structyin__s.html#a8cca938167af6b504458ff9578420afd" title="Size of analysis frame.">search_threshold</a>,
<a name="l00066"></a>00066 <span class="keywordtype">float</span> <a class="code" href="structyin__s.html#a208dfba1535fdd31962e687d82913dfd" title="Range around best local estimate to search, in Q15.">search_range</a>, <span class="keywordtype">int</span> smooth_window);
<a name="l00067"></a>00067
<a name="l00071"></a>00071 SPHINXBASE_EXPORT
<a name="l00072"></a>00072 <span class="keywordtype">void</span> <a class="code" href="yin_8h.html#ae587e0d984966c482f21ee4cb0952dd0" title="Free a moving-window pitch estimator.">yin_free</a>(<a class="code" href="structyin__s.html">yin_t</a> *pe);
<a name="l00073"></a>00073
<a name="l00077"></a>00077 SPHINXBASE_EXPORT
<a name="l00078"></a>00078 <span class="keywordtype">void</span> <a class="code" href="yin_8h.html#a9a93d7c0fd3eb97d8ea735a76683ff4d" title="Start processing an utterance.">yin_start</a>(<a class="code" href="structyin__s.html">yin_t</a> *pe);
<a name="l00079"></a>00079
<a name="l00083"></a>00083 SPHINXBASE_EXPORT
<a name="l00084"></a>00084 <span class="keywordtype">void</span> <a class="code" href="yin_8h.html#a9182cabf44e517c2db3b67edacebece9" title="Mark the end of an utterance.">yin_end</a>(<a class="code" href="structyin__s.html">yin_t</a> *pe);
<a name="l00085"></a>00085
<a name="l00093"></a>00093 SPHINXBASE_EXPORT
<a name="l00094"></a>00094 <span class="keywordtype">void</span> <a class="code" href="yin_8h.html#ac316a9b80593ad996df71b0f6df54d6c" title="Feed a frame of data to the pitch estimator.">yin_write</a>(<a class="code" href="structyin__s.html">yin_t</a> *pe, int16 <span class="keyword">const</span> *frame);
<a name="l00095"></a>00095
<a name="l00109"></a>00109 SPHINXBASE_EXPORT
<a name="l00110"></a>00110 <span class="keywordtype">int</span> <a class="code" href="yin_8h.html#a3a0ae5d5a543b9e71b34c9b4a285bdbf" title="Read a raw estimated pitch value from the pitch estimator.">yin_read</a>(<a class="code" href="structyin__s.html">yin_t</a> *pe, uint16 *out_period, uint16 *out_bestdiff);
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00113"></a>00113 <span class="preprocessor"></span>}
<a name="l00114"></a>00114 <span class="preprocessor">#endif</span>
<a name="l00115"></a>00115 <span class="preprocessor"></span>
<a name="l00116"></a>00116 <span class="preprocessor">#endif </span><span class="comment">/* __YIN_H__ */</span>
<a name="l00117"></a>00117
</pre></div></div>
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