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</p>
<p>PulseAudio's pacmd tool is used to find the right sink to play-out the audio produced by the remote Peer Connection.</p>
<p> PulseAudio's parec tool and Sox Recording tool is used to record the audio played out at the sink to generate output recorded audio file </p><p> SOX is again used to trim silence at the beginning and end of the recorded audio file. </p>
<p> Finally PESQ is used to compute the quality scores between the input audio file (original) and the output audio file (recorded) </p>
