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-<h1>fft.hch</h1><a href="fft_8hch.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a><a class="code" href="fft_8hch.html#a0">00001</a> <span class="preprocessor">#define NUMBER_OF_COLUMNS 8</span>
-<a name="l00002"></a><a class="code" href="fft_8hch.html#a1">00002</a> <span class="preprocessor"></span><span class="preprocessor">#define NUMBER_OF_POINTS (1&lt;&lt;NUMBER_OF_COLUMNS)</span>
-<a name="l00003"></a><a class="code" href="fft_8hch.html#a2">00003</a> <span class="preprocessor"></span><span class="preprocessor">#define NUMBER_OF_FREQUENCIES (NUMBER_OF_POINTS&gt;&gt;1)</span>
-00004 <span class="preprocessor"></span>
-00005 <span class="preprocessor">#if HARDWARE_MULTIPLY</span>
-00006 <span class="preprocessor"></span><span class="comment">/*</span>
-00007 <span class="comment"> * This routine obtains the audio data from the audio I/O component and copies this </span>
-00008 <span class="comment"> * data to local arrays for calculating purposes, and calls the FFT algorithm.</span>
-00009 <span class="comment">*/</span>
-00010 <span class="keywordtype">void</span> <a class="code" href="fft_8hcc.html#a4">perform_fft</a>(<span class="keywordtype">signed</span> 18 *pcm_audio);
-00011
-00012 <span class="comment">/* This routine calls the ifft algorithm and after completing that it obtains the </span>
-00013 <span class="comment"> * modified audio data and copies that to the output arrays of the audio I/O component. </span>
-00014 <span class="comment"> * Besides that it also fills the array used by the display routine for displaying the waveform.</span>
-00015 <span class="comment">*/</span>
-00016 <span class="keywordtype">void</span> <a class="code" href="fft_8hcc.html#a5">perform_ifft</a>(<span class="keywordtype">signed</span> 18 *modified_audio ,<span class="keywordtype">unsigned</span> 6 *ifft_info);
-00017 <span class="preprocessor">#else</span>
-00018 <span class="preprocessor"></span><span class="comment">/*</span>
-00019 <span class="comment"> * This routine obtains the audio data from the audio I/O component and copies this </span>
-00020 <span class="comment"> * data to local arrays for calculating purposes, and calls the FFT algorithm.</span>
-00021 <span class="comment">*/</span>
-00022 <span class="keywordtype">void</span> <a class="code" href="fft_8hcc.html#a4">perform_fft</a>(<span class="keywordtype">signed</span> 16 *pcm_audio);
-00023
-00024 <span class="comment">/* This routine calls the ifft algorithm and after completing that it obtains the </span>
-00025 <span class="comment"> * modified audio data and copies that to the output arrays of the audio I/O component. </span>
-00026 <span class="comment"> * Besides that it also fills the array used by the display routine for displaying the waveform.</span>
-00027 <span class="comment">*/</span>
-00028 <span class="keywordtype">void</span> <a class="code" href="fft_8hcc.html#a5">perform_ifft</a>(<span class="keywordtype">signed</span> 16 *modified_audio ,<span class="keywordtype">unsigned</span> 6 *ifft_info);
-00029 <span class="preprocessor">#endif</span>
-00030 <span class="preprocessor"></span>
-00031 <span class="comment">/* This routine equalizes the frequencies derived by the FFT calculation, </span>
-00032 <span class="comment"> * according to the settings of the equalizer bars.</span>
-00033 <span class="comment">*/</span>
-00034 <span class="keywordtype">void</span> <a class="code" href="fft_8hcc.html#a6">equalize_audio</a>(<a class="code" href="structaudiodata__t.html">audiodata_t</a> *audiodata);
-</pre></div><hr size="1"><address style="align: right;"><small>Generated on Thu Dec 9 14:37:06 2004 for Graphic Equalizer 2 by&nbsp;
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