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<body class='hmmessage'><div dir='ltr'><font style="font-size: 10pt;" size="2" color="#5133AB" face="Arial,sans-serif"><br id="FontBreak"></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">Hi All,</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">Need Help !</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">I am interested testing opus codec encoding decoding qaulity. for this have complied opus code codec from souce. After compiling i got opus_demo app.</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">for Encoding i followed below steps:</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">1) Reference file used music_orig.wav (http://www.opus-codec.org/examples/samples/music_orig.wav)</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"> Number of samples : 4358219 (90.8 s) 2015-04-13 10:40:07 UTC</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"> Sampling frequency: 48000 Hz</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"> Number of channels: 2 (16-bit integer)</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"> File name: music_orig.wav</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"> Header length: 44</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"> Sampling frequency: 48000</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"> No. samples: 4358219</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"> No. channels: 2</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"> Data type: integer16</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"> File byte order: little-endian</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"> Host byte order: little-endian</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">2) I encode this file using following command</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">./opus_demo -e voip 48000 2 16 music_orig.wav testcase30.opus</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">3) Then Decoded testcase30.opus using following command </font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">./opus_demo -d 48000 2 testcase30.opus testcase31.wav</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">4) My quality monitoring app not able to identify file type of "testcase31.wav" , gives following error.</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">AFfindType - Unknown audio file type</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">AFopnRead: Error opening input audio file "testcase31.wav"</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">Can some body please take look and verify that i have followed correct steps while encoding and decoding , else let know correct steps. </font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif">If any body have quality testing related resouce , test cases, sample files, web links please share.</font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="font-size: 10pt;" size="2" face="Arial,sans-serif"><br></font><font style="background-color: rgb(255, 255, 255); font-size: 10pt;" size="2" color="#5133AB" face="Arial,sans-serif">Best Regards,</font><div><font style="background-color: rgb(255, 255, 255); font-size: 10pt;" size="2" color="#5133AB" face="Arial,sans-serif">Sakharam Thorat.</font></div> </div></body>
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