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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<h2 class="groupheader">Typedef Documentation</h2>
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          <td class="memname">typedef struct <a class="el" href="struct_o_m_x___a_u_d_i_o___c_o_n_f_i_g___c_h_o_r_u_s_t_y_p_e.html">OMX_AUDIO_CONFIG_CHORUSTYPE</a>  <a class="el" href="struct_o_m_x___a_u_d_i_o___c_o_n_f_i_g___c_h_o_r_u_s_t_y_p_e.html">OMX_AUDIO_CONFIG_CHORUSTYPE</a></td>
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<p>The chorus effect (or ``choralizer'') is any signal processor which makes one sound source (such as a voice) sound like many such sources singing (or playing) in unison. Since performance in unison is never exact, chorus effects simulate this by making independently modified copies of the input signal. Modifications may include (1) delay, (2) frequency shift, and (3) amplitude modulation. </p>

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<p>Enable / Disable for echo cancelation, which removes undesired echo's from the audio </p>

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<p>An equalizer is typically used for two reasons: to compensate for an sub-optimal frequency response of a system to make it sound more natural or to create intentionally some unnatural coloring to the sound to create an effect. </p>

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<p>Enable / Disable for noise reduction, which undesired noise from the audio </p>

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<p>Reverberation is part of the reflected sound that follows the early reflections. In a typical room, this consists of a dense succession of echoes whose energy decays exponentially. The reverberation effect structure as defined here includes both (early) reflections as well as (late) reverberations. </p>

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<p>Control for stereo widening, which is a special 2-channel case of the audio virtualizer effect. For example, for 5.1-channel output, it translates to virtual surround sound. </p>

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<p>Possible settings for the Echo Cancelation structure to use </p>

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<p>Stereo widening mode type </p>

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<h2 class="groupheader">Enumeration Type Documentation</h2>
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          <td class="memname">enum <a class="el" href="group__effects.html#ga200d093905fe6bd42e75fffc1c98af03">OMX_AUDIO_ECHOCANTYPE</a></td>
        </tr>
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<p>Possible settings for the Echo Cancelation structure to use </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a class="anchor" id="gga200d093905fe6bd42e75fffc1c98af03acf90d7307bc135203a1df4f037d1c922"></a>OMX_AUDIO_EchoCanOff&#160;</td><td class="fielddoc">
<p>Echo Cancellation is disabled </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="gga200d093905fe6bd42e75fffc1c98af03aafcf34d5e145912dfb6582388acf1f8b"></a>OMX_AUDIO_EchoCanNormal&#160;</td><td class="fielddoc">
<p>Echo Cancellation normal operation - echo from plastics and face </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="gga200d093905fe6bd42e75fffc1c98af03a23bb153e9a4a0472d92222b3fb56e0b0"></a>OMX_AUDIO_EchoCanHFree&#160;</td><td class="fielddoc">
<p>Echo Cancellation optimized for Hands Free operation </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="gga200d093905fe6bd42e75fffc1c98af03a4e703fa746c2c72678777261706fc41c"></a>OMX_AUDIO_EchoCanCarKit&#160;</td><td class="fielddoc">
<p>Echo Cancellation optimized for Car Kit (longer echo) </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="gga200d093905fe6bd42e75fffc1c98af03abe8271368d5738827ea76d1783af3d2d"></a>OMX_AUDIO_EchoCanKhronosExtensions&#160;</td><td class="fielddoc">
<p>Reserved region for introducing Khronos Standard Extensions </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="gga200d093905fe6bd42e75fffc1c98af03a3993ddceebd6e14561bbdd4ab89a5a45"></a>OMX_AUDIO_EchoCanVendorStartUnused&#160;</td><td class="fielddoc">
<p>Reserved region for introducing Vendor Extensions </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="gga200d093905fe6bd42e75fffc1c98af03a5e67fa07c85cdcaa40080e21c2c8f29f"></a>OMX_AUDIO_EchoCanMax&#160;</td><td class="fielddoc">
</td></tr>
</table>

<p>Definition at line <a class="el" href="_o_m_x___audio_8h_source.html#l01266">1266</a> of file <a class="el" href="_o_m_x___audio_8h_source.html">OMX_Audio.h</a>.</p>

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</div>
<a class="anchor" id="ga5b5723f745c6682ad2015c8057e532ac"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">enum <a class="el" href="group__effects.html#ga5b5723f745c6682ad2015c8057e532ac">OMX_AUDIO_STEREOWIDENINGTYPE</a></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Stereo widening mode type </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a class="anchor" id="gga5b5723f745c6682ad2015c8057e532aca9b1744afd68424e2a759688aa19da1fe"></a>OMX_AUDIO_StereoWideningHeadphones&#160;</td><td class="fielddoc">
<p>Stereo widening for loudspeakers </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="gga5b5723f745c6682ad2015c8057e532aca48801d59ae475a616e838b0f89dd476c"></a>OMX_AUDIO_StereoWideningLoudspeakers&#160;</td><td class="fielddoc">
<p>Stereo widening for closely spaced loudspeakers </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="gga5b5723f745c6682ad2015c8057e532aca81391d71ca18cbccc27ddf6bdd62c8d9"></a>OMX_AUDIO_StereoWideningKhronosExtensions&#160;</td><td class="fielddoc">
<p>Reserved region for introducing Khronos Standard Extensions </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="gga5b5723f745c6682ad2015c8057e532aca9172713832254c7307a3790004f13b5a"></a>OMX_AUDIO_StereoWideningVendorStartUnused&#160;</td><td class="fielddoc">
<p>Reserved region for introducing Vendor Extensions </p>
</td></tr>
<tr><td class="fieldname"><a class="anchor" id="gga5b5723f745c6682ad2015c8057e532aca29ee39ee560985aa7f752f56fdbde866"></a>OMX_AUDIO_StereoWideningMax&#160;</td><td class="fielddoc">
</td></tr>
</table>

<p>Definition at line <a class="el" href="_o_m_x___audio_8h_source.html#l01176">1176</a> of file <a class="el" href="_o_m_x___audio_8h_source.html">OMX_Audio.h</a>.</p>

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