st-mems-ispu/docs/structispu__biquad__casd__df1__inst__f32.html at master · STMicroelectronics/st-mems-ispu · GitHub

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<div class="header">
  <div class="headertitle"><div class="title">ispu_biquad_casd_df1_inst_f32 Struct Reference<div class="ingroups"><a class="el" href="group__filtering.html">Filtering</a></div></div></div>
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<p>Floating-point biquad cascade filter (direct form I) instance structure.
 <a href="#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="ispu__dsp_8h_source.html">ispu_dsp.h</a>&gt;</code></p>
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Data Fields</h2></td></tr>
<tr class="memitem:abfe89a7423cbdfa55c17ba5aa9c4d679" id="r_abfe89a7423cbdfa55c17ba5aa9c4d679"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#abfe89a7423cbdfa55c17ba5aa9c4d679">num_stages</a></td></tr>
<tr class="memitem:aa8b94a88571fbb9e1b957c4b1aa846c3" id="r_aa8b94a88571fbb9e1b957c4b1aa846c3"><td class="memItemLeft" align="right" valign="top">float *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#aa8b94a88571fbb9e1b957c4b1aa846c3">state</a></td></tr>
<tr class="memitem:a374e8b870953fc5d14772768a9db220e" id="r_a374e8b870953fc5d14772768a9db220e"><td class="memItemLeft" align="right" valign="top">const float *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a374e8b870953fc5d14772768a9db220e">coeffs</a></td></tr>
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<a name="details" id="details"></a><h2 id="header-details" class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Floating-point biquad cascade filter (direct form I) instance structure. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#abfe89a7423cbdfa55c17ba5aa9c4d679">&#9670;&#160;</a></span>num_stages</h2>

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          <td class="memname">uint8_t ispu_biquad_casd_df1_inst_f32::num_stages</td>
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<p>Number of biquad stages. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#aa8b94a88571fbb9e1b957c4b1aa846c3">&#9670;&#160;</a></span>state</h2>

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          <td class="memname">float* ispu_biquad_casd_df1_inst_f32::state</td>
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<p>Pointer to the state array (length must be num_stages * 4). </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a374e8b870953fc5d14772768a9db220e">&#9670;&#160;</a></span>coeffs</h2>

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          <td class="memname">const float* ispu_biquad_casd_df1_inst_f32::coeffs</td>
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<p>Pointer to the coefficients array (length must num_stages * 5). The array must contain, in order, b0, b1, b2, -a1, -a2 for each biquad stage. </p>

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<hr/>The documentation for this struct was generated from the following file:<ul>
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