<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
        {font-family:Calibri;
        panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
        {font-family:Consolas;
        panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
        {margin:0in;
        margin-bottom:.0001pt;
        font-size:11.0pt;
        font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
        {mso-style-priority:99;
        color:blue;
        text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
        {mso-style-priority:99;
        color:purple;
        text-decoration:underline;}
span.EmailStyle17
        {mso-style-type:personal-compose;
        font-family:"Calibri","sans-serif";
        color:windowtext;
        font-weight:normal;
        font-style:normal;}
.MsoChpDefault
        {mso-style-type:export-only;
        font-size:10.0pt;
        font-family:"Calibri","sans-serif";}
@page WordSection1
        {size:8.5in 11.0in;
        margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
        {page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal">Hello Everyone,<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">I am using the opus 1.1 multistream APIs to encode a 5.1 surround stream on the server, stream it to client, decode it and capture the pcm data. I noticed that there was severe corruption/attenuation on one of the channels(specifically
 Back/Rear Right). This would appear to be the last channel in the stream. I am attaching an image of the PCM dumps from the original and the one decoded on the client which shows the channel corruption. If required I can also provide the source and destination
 wav files. The track I am trying to play is purely speech data, however, it has been formatted as Hi-Definition content (16 bit LPCM, 48 KHz). I&#8217;d like to add that I have also tried a simple loopback test; where I read from &#8216;the&#8217; source file encode it, immediately
 decode the encoded buffer and write to a output file and I am seeing the same kind of corruption. Since my actual use-case will involve mixed media content, i.e. typically voice and music, I was a bit concerned about this.<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">If the file purely has music(and no speech), I do notice some attenuation, however, it does not suffer from any distortions.<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">Following is the code I am using for initializing the opus multi-stream encoder: -<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">&lt;code&gt;<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal" style="margin-left:.5in">&lt;defines and vars&gt;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">#define</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">CHANNELS</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 6</span><span style="font-size:9.5pt;font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">#define</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_SURROUND_MAPPING_FAMILY</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"> 1<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">#define</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">SAMPLE_RATE</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"> 48000</span><span style="font-size:9.5pt;font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt;font-family:Consolas;color:black"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">typedef</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">union</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#2B91AF;background:white;mso-highlight:white">t_SurroundInfo</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">{<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">unsigned</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">char</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"> surroundInfo[1];<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">struct</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp; {<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">unsigned</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">char</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp; channels;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">unsigned</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">char</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp; streams;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">unsigned</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">char</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp; coupled_streams;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">unsigned</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">char</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp; channel_mapping[</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">MAX_SURROUND_CHANNELS</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">];<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp; }s;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">}</span><span style="font-size:9.5pt;font-family:Consolas;color:#2B91AF;background:white;mso-highlight:white">SurroundInfo</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">;</span><span style="font-size:9.5pt;font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt;font-family:Consolas;color:black"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in">&lt;/defines and vars&gt;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal" style="margin-left:.5in">&lt;encoder&gt;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">int</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
 streams = 0; </span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">int</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"> coupled_streams = 0;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp;m_SurroundInfo.s.channels =
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">CHANNELS</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">; // set to 6<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; m_MSEnc = opus_multistream_surround_encoder_create(</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">SAMPLE_RATE</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">,
 // SAMPLE_RATE = 48000<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; m_SurroundInfo.s.channels,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_SURROUND_MAPPING_FAMILY</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;streams,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;coupled_streams,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; m_SurroundInfo.s.channel_mapping,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_APPLICATION_RESTRICTED_LOWDELAY</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;err<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; );<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">if</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"> (err !=
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_OK</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">return</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; m_SurroundInfo.s.streams = (</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">unsigned</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">char</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">)streams;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; m_SurroundInfo.s.coupled_streams = (</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">unsigned</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">char</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">)coupled_streams;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;opus_multistream_encoder_ctl(m_MSEnc,
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_SET_BITRATE</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">(</span><span style="font-size:9.5pt;font-family:Consolas;color:gray;background:white;mso-highlight:white">bitRate</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">));<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; opus_multistream_encoder_ctl(m_MSEnc,
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_SET_BANDWIDTH</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">(</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_AUTO</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">));<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; opus_multistream_encoder_ctl(m_MSEnc,
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_SET_VBR</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">(0));<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; opus_multistream_encoder_ctl(m_MSEnc,
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_SET_VBR_CONSTRAINT</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">(0));<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; opus_multistream_encoder_ctl(m_MSEnc,
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_SET_COMPLEXITY</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">(10));<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; opus_multistream_encoder_ctl(m_MSEnc,
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_SET_INBAND_FEC</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">(0));<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; opus_multistream_encoder_ctl(m_MSEnc,
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_SET_FORCE_CHANNELS</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">(</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_AUTO</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">));<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; opus_multistream_encoder_ctl(m_MSEnc,
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_SET_DTX</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">(0));<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; opus_multistream_encoder_ctl(m_MSEnc,
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_SET_PACKET_LOSS_PERC</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">(0));<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; opus_multistream_encoder_ctl(m_MSEnc,
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">OPUS_SET_FORCE_MODE</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">(</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">MODE_CELT_ONLY</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">));</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal" style="margin-left:.5in">&lt;/encoder&gt;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal" style="margin-left:.5in">&lt;decoder&gt;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">int</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"> streams = (</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">int</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">)m_SurroundInfo.s.streams;
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">int</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white"> coupled_streams = (</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white;mso-highlight:white">int</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">)m_SurroundInfo.s.coupled_streams;<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp; m_MSDec = opus_multistream_decoder_create(</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A;background:white;mso-highlight:white">SAMPLE_RATE</span><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; m_SurroundInfo.s.channels,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; streams,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; coupled_streams,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; m_SurroundInfo.s.channel_mapping,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;err<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:9.5pt;font-family:Consolas;color:black;background:white;mso-highlight:white">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; );</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal" style="margin-left:.5in">&lt;/decoder&gt;<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">&lt;/code&gt;<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">I&#8217;d appreciate it, if someone can shed some light on why the observed phenomenon is occurring. Could it just be that, I am playing a content that only has speech and actually forcing opus mode to CELT?<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">Thanks in advance.<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">Warm regards,<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">Mukund.<o:p></o:p></p>
</div>

<DIV>
<HR>
</DIV>
<DIV>This email message is for the sole use of the intended recipient(s) and may 
contain confidential information.&nbsp; Any unauthorized review, use, disclosure 
or distribution is prohibited.&nbsp; If you are not the intended recipient, 
please contact the sender by reply email and destroy all copies of the original 
message. </DIV>
<DIV>
<HR>
</DIV>
</body>
</html>