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286 lines
14 KiB
HTML
286 lines
14 KiB
HTML
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<div class="headertitle"><div class="title">Real FFT Tables<div class="ingroups"><a class="el" href="group__groupTransforms.html">Transform Functions</a> » <a class="el" href="group__RealFFT.html">Real FFT Functions</a></div></div></div>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="var-members" name="var-members"></a>
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Variables</h2></td></tr>
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<tr class="memitem:ga8b1ad947c470596674fa3364e16045c6"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__RealFFT__Table.html#ga8b1ad947c470596674fa3364e16045c6">realCoefA</a> [8192]</td></tr>
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<tr class="separator:ga8b1ad947c470596674fa3364e16045c6"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gac52f98b52a1f03bfac8b57a67ba07397"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__RealFFT__Table.html#gac52f98b52a1f03bfac8b57a67ba07397">realCoefB</a> [8192]</td></tr>
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<tr class="separator:gac52f98b52a1f03bfac8b57a67ba07397"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gaf1592a6cf0504675205074a43c3728a2"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__RealFFT__Table.html#gaf1592a6cf0504675205074a43c3728a2">realCoefAQ31</a> [8192]</td></tr>
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<tr class="separator:gaf1592a6cf0504675205074a43c3728a2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga1eb5745728a61c3715755f5d69a4a960"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__RealFFT__Table.html#ga1eb5745728a61c3715755f5d69a4a960">realCoefBQ31</a> [8192]</td></tr>
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<tr class="separator:ga1eb5745728a61c3715755f5d69a4a960"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gaf8699e77c7774359b96ef388efa7d453"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math__types_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__RealFFT__Table.html#gaf8699e77c7774359b96ef388efa7d453">realCoefAQ15</a> [8192]</td></tr>
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<tr class="separator:gaf8699e77c7774359b96ef388efa7d453"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga3b12ecbb17514304c09f90d26cada4cd"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math__types_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__RealFFT__Table.html#ga3b12ecbb17514304c09f90d26cada4cd">realCoefBQ15</a> [8192]</td></tr>
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<tr class="separator:ga3b12ecbb17514304c09f90d26cada4cd"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
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<h2 class="groupheader">Variable Documentation</h2>
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<a id="ga8b1ad947c470596674fa3364e16045c6" name="ga8b1ad947c470596674fa3364e16045c6"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga8b1ad947c470596674fa3364e16045c6">◆ </a></span>realCoefA</h2>
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<td class="memname">const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> realCoefA[8192]</td>
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</div><div class="memdoc">
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<dl class="section user"><dt></dt><dd>Generation of realCoefA array: </dd></dl>
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<dl class="section user"><dt></dt><dd>n = 4096 <pre>for (i = 0; i < n; i++)
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{
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pATable[2 * i] = 0.5 * ( 1.0 - sin (2 * PI / (double) (2 * n) * (double) i));
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pATable[2 * i + 1] = 0.5 * (-1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
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}</pre> </dd></dl>
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</div>
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</div>
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<a id="gaf8699e77c7774359b96ef388efa7d453" name="gaf8699e77c7774359b96ef388efa7d453"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gaf8699e77c7774359b96ef388efa7d453">◆ </a></span>realCoefAQ15</h2>
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<td class="memname">const <a class="el" href="arm__math__types_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> realCoefAQ15[8192]</td>
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</div><div class="memdoc">
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<dl class="section user"><dt></dt><dd>Generation fixed-point realCoefAQ15 array in Q15 format: </dd></dl>
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<dl class="section user"><dt></dt><dd>n = 4096 <pre>for (i = 0; i < n; i++)
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{
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pATable[2 * i] = 0.5 * ( 1.0 - sin (2 * PI / (double) (2 * n) * (double) i));
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pATable[2 * i + 1] = 0.5 * (-1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
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}</pre> </dd></dl>
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<dl class="section user"><dt></dt><dd>Convert to fixed point Q15 format round(pATable[i] * pow(2, 15)) </dd></dl>
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</div>
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</div>
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<a id="gaf1592a6cf0504675205074a43c3728a2" name="gaf1592a6cf0504675205074a43c3728a2"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gaf1592a6cf0504675205074a43c3728a2">◆ </a></span>realCoefAQ31</h2>
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<td class="memname">const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> realCoefAQ31[8192]</td>
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<dl class="section user"><dt></dt><dd>Generation fixed-point realCoefAQ31 array in Q31 format: </dd></dl>
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<dl class="section user"><dt></dt><dd>n = 4096 <pre>for (i = 0; i < n; i++)
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{
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pATable[2 * i] = 0.5 * ( 1.0 - sin (2 * PI / (double) (2 * n) * (double) i));
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pATable[2 * i + 1] = 0.5 * (-1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
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}</pre> </dd></dl>
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<dl class="section user"><dt></dt><dd>Convert to fixed point Q31 format round(pATable[i] * pow(2, 31)) </dd></dl>
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</div>
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</div>
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<a id="gac52f98b52a1f03bfac8b57a67ba07397" name="gac52f98b52a1f03bfac8b57a67ba07397"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gac52f98b52a1f03bfac8b57a67ba07397">◆ </a></span>realCoefB</h2>
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<td class="memname">const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> realCoefB[8192]</td>
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</div><div class="memdoc">
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<dl class="section user"><dt></dt><dd>Generation of realCoefB array: </dd></dl>
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<dl class="section user"><dt></dt><dd>n = 4096 <pre>for (i = 0; i < n; i++)
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{
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pBTable[2 * i] = 0.5 * (1.0 + sin (2 * PI / (double) (2 * n) * (double) i));
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pBTable[2 * i + 1] = 0.5 * (1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
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}</pre> </dd></dl>
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<a id="ga3b12ecbb17514304c09f90d26cada4cd" name="ga3b12ecbb17514304c09f90d26cada4cd"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga3b12ecbb17514304c09f90d26cada4cd">◆ </a></span>realCoefBQ15</h2>
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<td class="memname">const <a class="el" href="arm__math__types_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> realCoefBQ15[8192]</td>
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</table>
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</div><div class="memdoc">
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<dl class="section user"><dt></dt><dd>Generation of real_CoefB array: </dd></dl>
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<dl class="section user"><dt></dt><dd>n = 4096 <pre>for (i = 0; i < n; i++)
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{
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pBTable[2 * i] = 0.5 * (1.0 + sin (2 * PI / (double) (2 * n) * (double) i));
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pBTable[2 * i + 1] = 0.5 * (1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
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}</pre> </dd></dl>
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<dl class="section user"><dt></dt><dd>Convert to fixed point Q15 format round(pBTable[i] * pow(2, 15)) </dd></dl>
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</div>
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<a id="ga1eb5745728a61c3715755f5d69a4a960" name="ga1eb5745728a61c3715755f5d69a4a960"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga1eb5745728a61c3715755f5d69a4a960">◆ </a></span>realCoefBQ31</h2>
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<td class="memname">const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> realCoefBQ31[8192]</td>
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</table>
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</div><div class="memdoc">
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<dl class="section user"><dt></dt><dd>Generation of realCoefBQ31 array: </dd></dl>
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<dl class="section user"><dt></dt><dd>n = 4096 <pre>for (i = 0; i < n; i++)
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{
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pBTable[2 * i] = 0.5 * (1.0 + sin (2 * PI / (double) (2 * n) * (double) i));
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pBTable[2 * i + 1] = 0.5 * (1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
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} </pre> </dd></dl>
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<dl class="section user"><dt></dt><dd>Convert to fixed point Q31 format round(pBTable[i] * pow(2, 31)) </dd></dl>
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