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266 lines
13 KiB
HTML
266 lines
13 KiB
HTML
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<a href="#func-members">Functions</a> </div>
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<div class="headertitle"><div class="title">Hft248d window function (248.4 dB)<div class="ingroups"><a class="el" href="group__groupWindow.html">Window Functions</a> » <a class="el" href="group__WindowFlat.html">Flat-top window functions</a></div></div></div>
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<div class="contents">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:gaebf4552fbb453b87f1d0e2d9b13d58f1"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__WindowHFT248D.html#gaebf4552fbb453b87f1d0e2d9b13d58f1">arm_hft248d_f32</a> (<a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<tr class="memdesc:gaebf4552fbb453b87f1d0e2d9b13d58f1"><td class="mdescLeft"> </td><td class="mdescRight">Hft248d window generating function (f32). <a href="group__WindowHFT248D.html#gaebf4552fbb453b87f1d0e2d9b13d58f1">More...</a><br /></td></tr>
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<tr class="separator:gaebf4552fbb453b87f1d0e2d9b13d58f1"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga82f8d99641f140cd861f526ce7dcd506"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__WindowHFT248D.html#ga82f8d99641f140cd861f526ce7dcd506">arm_hft248d_f64</a> (<a class="el" href="arm__math__types_8h.html#ac55f3ae81b5bc9053760baacf57e47f4">float64_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<tr class="memdesc:ga82f8d99641f140cd861f526ce7dcd506"><td class="mdescLeft"> </td><td class="mdescRight">Hft248d window generating function (f64). <a href="group__WindowHFT248D.html#ga82f8d99641f140cd861f526ce7dcd506">More...</a><br /></td></tr>
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<tr class="separator:ga82f8d99641f140cd861f526ce7dcd506"><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">Function Documentation</h2>
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<a id="gaebf4552fbb453b87f1d0e2d9b13d58f1" name="gaebf4552fbb453b87f1d0e2d9b13d58f1"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gaebf4552fbb453b87f1d0e2d9b13d58f1">◆ </a></span>arm_hft248d_f32()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void arm_hft248d_f32 </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
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<td class="paramname"><em>pDst</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>blockSize</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p >Hft248d window (float).</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[out]</td><td class="paramname">pDst</td><td>points to the output generated window </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in the window </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none</dd></dl>
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<dl class="section user"><dt>Parameters of the window</dt><dd></dd></dl>
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<table class="markdownTable">
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<tr class="markdownTableHead">
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<th class="markdownTableHeadRight">Parameter </th><th class="markdownTableHeadRight">Value </th></tr>
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<tr class="markdownTableRowOdd">
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<td class="markdownTableBodyRight">Peak sidelobe level </td><td class="markdownTableBodyRight">248.4 dB </td></tr>
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<tr class="markdownTableRowEven">
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<td class="markdownTableBodyRight">Normalized equivalent noise bandwidth </td><td class="markdownTableBodyRight">5.6512 bins </td></tr>
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<tr class="markdownTableRowOdd">
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<td class="markdownTableBodyRight">3 dB bandwidth </td><td class="markdownTableBodyRight">5.5567 bins </td></tr>
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<tr class="markdownTableRowEven">
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<td class="markdownTableBodyRight">Flatness </td><td class="markdownTableBodyRight">0.0009 dB </td></tr>
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<tr class="markdownTableRowOdd">
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<td class="markdownTableBodyRight">Recommended overlap </td><td class="markdownTableBodyRight">84.1 % </td></tr>
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</table>
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<p >Included in CMSIS-DSP with authorization from professor Gerhard Heinzel.</p>
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<dl class="section user"><dt>Original article:</dt><dd>Spectrum and spectral density estimation by the Discrete Fourier transform (DFT), including a comprehensive list of window functions and some new flat-top windows.</dd></dl>
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<dl class="section user"><dt>Authors: </dt><dd>G. Heinzel, A. Rudiger and R. Schilling, Max-Planck-Institut fur Gravitationsphysik (Albert-Einstein-Institut) Teilinstitut Hannover </dd></dl>
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</div>
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</div>
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<a id="ga82f8d99641f140cd861f526ce7dcd506" name="ga82f8d99641f140cd861f526ce7dcd506"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga82f8d99641f140cd861f526ce7dcd506">◆ </a></span>arm_hft248d_f64()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void arm_hft248d_f64 </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="arm__math__types_8h.html#ac55f3ae81b5bc9053760baacf57e47f4">float64_t</a> * </td>
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<td class="paramname"><em>pDst</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>blockSize</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p >Hft248d window (double).</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[out]</td><td class="paramname">pDst</td><td>points to the output generated window </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in the window </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none</dd></dl>
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<dl class="section user"><dt>Parameters of the window</dt><dd></dd></dl>
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<table class="markdownTable">
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<tr class="markdownTableHead">
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<th class="markdownTableHeadRight">Parameter </th><th class="markdownTableHeadRight">Value </th></tr>
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<tr class="markdownTableRowOdd">
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<td class="markdownTableBodyRight">Peak sidelobe level </td><td class="markdownTableBodyRight">248.4 dB </td></tr>
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<tr class="markdownTableRowEven">
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<td class="markdownTableBodyRight">Normalized equivalent noise bandwidth </td><td class="markdownTableBodyRight">5.6512 bins </td></tr>
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<tr class="markdownTableRowOdd">
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<td class="markdownTableBodyRight">3 dB bandwidth </td><td class="markdownTableBodyRight">5.5567 bins </td></tr>
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<tr class="markdownTableRowEven">
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<td class="markdownTableBodyRight">Flatness </td><td class="markdownTableBodyRight">0.0009 dB </td></tr>
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<tr class="markdownTableRowOdd">
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<td class="markdownTableBodyRight">Recommended overlap </td><td class="markdownTableBodyRight">84.1 % </td></tr>
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</table>
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<p >Included in CMSIS-DSP with authorization from professor Gerhard Heinzel.</p>
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<dl class="section user"><dt>Original article:</dt><dd>Spectrum and spectral density estimation by the Discrete Fourier transform (DFT), including a comprehensive list of window functions and some new flat-top windows.</dd></dl>
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<dl class="section user"><dt>Authors: </dt><dd>G. Heinzel, A. Rudiger and R. Schilling, Max-Planck-Institut fur Gravitationsphysik (Albert-Einstein-Institut) Teilinstitut Hannover </dd></dl>
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