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<title>aubio: src/spectral/test-fft.c</title>
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<div class="title">src/spectral/test-fft.c</div> </div>
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<div class="fragment"><div class="line"><span class="preprocessor">#include <<a class="code" href="aubio_8h.html">aubio.h</a>></span></div><div class="line"></div><div class="line"><span class="keywordtype">int</span> main (<span class="keywordtype">void</span>)</div><div class="line">{</div><div class="line"> <a class="code" href="types_8h.html#a12a1e9b3ce141648783a82445d02b58d">uint_t</a> i, n_iters = 100; <span class="comment">// number of iterations</span></div><div class="line"> <a class="code" href="types_8h.html#a12a1e9b3ce141648783a82445d02b58d">uint_t</a> win_s = 500; <span class="comment">// window size</span></div><div class="line"> <a name="_a0"></a><a class="code" href="structfvec__t.html">fvec_t</a> * in = <a name="a1"></a><a class="code" href="fvec_8h.html#aa9bc0906651523429a4ebf7b4342fe73">new_fvec</a> (win_s); <span class="comment">// input buffer</span></div><div class="line"> <a name="_a2"></a><a class="code" href="structcvec__t.html">cvec_t</a> * fftgrain = <a name="a3"></a><a class="code" href="cvec_8h.html#afbb7fc65d12893e512be56ec0f5dc5f0">new_cvec</a> (win_s); <span class="comment">// fft norm and phase</span></div><div class="line"> <a class="code" href="structfvec__t.html">fvec_t</a> * out = <a class="code" href="fvec_8h.html#aa9bc0906651523429a4ebf7b4342fe73">new_fvec</a> (win_s); <span class="comment">// output buffer</span></div><div class="line"> <span class="comment">// create fft object</span></div><div class="line"> <a class="code" href="fft_8h.html#ad506b94ab0c39da949d97064e394d2c9">aubio_fft_t</a> * fft = <a name="a4"></a><a class="code" href="fft_8h.html#a4673d96bb99fa2e758352cc177516465">new_aubio_fft</a>(win_s);</div><div class="line"></div><div class="line"> <span class="comment">// fill input with some data</span></div><div class="line"> in-><a name="a5"></a><a class="code" href="structfvec__t.html#a14bf045394eb718428b8cd64573caa54">data</a>[0] = 1;</div><div class="line"> in-><a class="code" href="structfvec__t.html#a14bf045394eb718428b8cd64573caa54">data</a>[1] = 2;</div><div class="line"> in-><a class="code" href="structfvec__t.html#a14bf045394eb718428b8cd64573caa54">data</a>[2] = 3;</div><div class="line"> in-><a class="code" href="structfvec__t.html#a14bf045394eb718428b8cd64573caa54">data</a>[3] = 4;</div><div class="line"> in-><a class="code" href="structfvec__t.html#a14bf045394eb718428b8cd64573caa54">data</a>[4] = 5;</div><div class="line"> in-><a class="code" href="structfvec__t.html#a14bf045394eb718428b8cd64573caa54">data</a>[5] = 6;</div><div class="line"> in-><a class="code" href="structfvec__t.html#a14bf045394eb718428b8cd64573caa54">data</a>[6] = 5;</div><div class="line"> in-><a class="code" href="structfvec__t.html#a14bf045394eb718428b8cd64573caa54">data</a>[7] = 6;</div><div class="line"> <span class="comment">//fvec_print(in);</span></div><div class="line"></div><div class="line"> <span class="keywordflow">for</span> (i = 0; i < n_iters; i++) {</div><div class="line"> <span class="comment">// execute stft</span></div><div class="line"> <a name="a6"></a><a class="code" href="fft_8h.html#a4dd3dca0e14d36d79cac3cfbb4cd013d">aubio_fft_do</a> (fft,in,fftgrain);</div><div class="line"> <a name="a7"></a><a class="code" href="cvec_8h.html#a910299ca4c79f87a426f1bfb970ec77a">cvec_print</a>(fftgrain);</div><div class="line"></div><div class="line"> <span class="comment">// execute inverse fourier transform</span></div><div class="line"> <a name="a8"></a><a class="code" href="fft_8h.html#a3904caf3f240ae84093a53c4bfca8bb4">aubio_fft_rdo</a>(fft,fftgrain,out);</div><div class="line"> }</div><div class="line"></div><div class="line"> <span class="comment">// cleam up</span></div><div class="line"> <span class="comment">//fvec_print(out);</span></div><div class="line"> <a name="a9"></a><a class="code" href="fft_8h.html#ac23532904ba415446d5c7afd8476925c">del_aubio_fft</a>(fft);</div><div class="line"> <a name="a10"></a><a class="code" href="fvec_8h.html#a86fad6d27aad91c910d1b48195922cb9">del_fvec</a>(in);</div><div class="line"> <a name="a11"></a><a class="code" href="cvec_8h.html#a98c745b15cea1b81e62cbb6fb21b0c56">del_cvec</a>(fftgrain);</div><div class="line"> <a class="code" href="fvec_8h.html#a86fad6d27aad91c910d1b48195922cb9">del_fvec</a>(out);</div><div class="line"> <a name="a12"></a><a class="code" href="musicutils_8h.html#a2b5d813f8d70b69add6f4811a68c9424">aubio_cleanup</a>();</div><div class="line"> <span class="keywordflow">return</span> 0;</div><div class="line">}</div></div><!-- fragment --> </div><!-- contents -->
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