<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Well, not really :)<div>The signal processing involved is not obvious, mainly because what you want is to compare 2 signals, keeping in mind that the human ear is the target (MOSPESQ is normally computed using a group of real people, each of them scoring the quality of the audio).</div><div>I don't know any software doing that for free. I am pretty sure in the commercial world, there should be something available.</div><div><br></div><div>Check <a href="http://www.phoenixdatacom.com/voip.html">http://www.phoenixdatacom.com/voip.html</a></div><div><br></div><div>Another solution is to use an external quality insurance service to do that for you. We have one like that in France. You give them an entry point in your network where to inject the audio, an exit point where to record the audio they injected, and they give you your MOSPESQ score.</div><div>The main reason to go that way, I think, is that the score they give you may be used as a reference against competitors.</div><div><br></div><div>And finally, you may probably build your own benchmark reading this:</div><div><br></div><div><a href="http://www.freeswitch.org/node/297">http://www.freeswitch.org/node/297</a><br><div><div><br class="webkit-block-placeholder"></div><div>I guess Kristian Kielhofner could tell you more about it.</div><div><br></div><div>
<span class="Apple-style-span" style="font-size: 14px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><font class="Apple-style-span" face="'Helvetica Neue'"><font class="Apple-style-span" color="#1C00FF">David Ponzone </font><font class="Apple-style-span" color="#000000" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Direction Technique</span></font></font></div><div><font class="Apple-style-span" face="'Helvetica Neue'"><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 13px; ">email: david.ponzone@ipeva.fr</span></font></font></div><div><font class="Apple-style-span" face="'Helvetica Neue'"><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 13px; ">tel: 01 74 03 18 97</span></font></font></div><div><font class="Apple-style-span" face="'Helvetica Neue'"><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 13px; ">gsm: 06 66 98 76 34</span></font></font></div><div><font class="Apple-style-span" face="'Helvetica Neue'"><br></font></div><div><font class="Apple-style-span" color="#1C00FF" face="'Helvetica Neue'">Service Client<span class="Apple-converted-space"> </span></font><font class="Apple-style-span" face="'Helvetica Neue'"><font class="Apple-style-span" color="#FF0000">IP</font></font><font class="Apple-style-span" color="#1C00FF" face="'Helvetica Neue'">eva</font></div><div><font class="Apple-style-span" color="#1C00FF" face="'Helvetica Neue'"><span class="Apple-style-span" style="color: rgb(0, 0, 0); font-family: Helvetica; "><div><font class="Apple-style-span" face="'Helvetica Neue'"><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 13px; ">tel: 0811 46 26 26</span></font></font></div><div><font class="Apple-style-span" face="'Helvetica Neue'" size="3"><span class="Apple-style-span" style="font-size: 13px; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 10px/normal Arial; color: rgb(0, 34, 243); "><span style="text-decoration: underline; "><a href="BLOCKED::http://www.ipeva.fr/">www.ipeva.fr</a></span><span style="color: rgb(101, 104, 149); "> - <span style="color: rgb(0, 34, 243); text-decoration: underline; "><a href="BLOCKED::http://www.ipeva-studio.com/">www.ipeva-studio.com</a></span></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 10px/normal Arial; color: rgb(0, 34, 243); "><span class="Apple-style-span" style="text-decoration: underline; "><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 10px/normal Arial; color: rgb(0, 34, 243); "><span class="Apple-style-span"><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; text-align: justify; font: normal normal normal 10px/normal Arial; color: rgb(192, 192, 192); "><i>Ce message et toutes les pièces jointes sont confidentiels et établis à l'intention exclusive de ses destinataires. Toute utilisation ou diffusion non autorisée est interdite. Tout message électronique est susceptible d'altération. </i><b><i>IPeva</i></b><i> décline toute responsabilité au titre de ce message s'il a été altéré, déformé ou falsifié. Si vous n'êtes pas destinataire de ce message, merci de le détruire immédiatement et d'avertir l'expéditeur.</i></div><div style="text-decoration: underline; text-align: justify; "><font class="Apple-style-span" color="#C0C0C0"><i><br></i></font></div></span></div></span></font></div></span></font></div></div></span><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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<br><div><div>Le 02/02/2011 à 20:00, Juan Antonio Ibañez Santorum a écrit :</div><br class="Apple-interchange-newline"><blockquote type="cite">Could you give any info about which tools to use?<div><br></div><div>Regards<br><br><div class="gmail_quote">2011/2/2 David Ponzone <span dir="ltr"><<a href="mailto:david.ponzone@ipeva.fr">david.ponzone@ipeva.fr</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div style="word-wrap:break-word">A common way to test audio quality is to have a device (sipp for instance) calling your FS and playing a known audio file.<div>
FS would then record it and then, by comparing the recorded and the original one and using some signal processing, you can compute a MOSPESQ figure.</div><div><br><div>
<span style="border-collapse:separate;color:rgb(0, 0, 0);font-family:Helvetica;font-size:14px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="border-collapse:separate;color:rgb(0, 0, 0);font-family:Helvetica;font-size:14px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div style="word-wrap:break-word">
<div><font face="'Helvetica Neue'"><font color="#1C00FF">David Ponzone </font><font color="#000000" size="3"><span style="font-size:12px">Direction Technique</span></font></font></div><div><font face="'Helvetica Neue'"><font size="3"><span style="font-size:13px">email: <a href="mailto:david.ponzone@ipeva.fr" target="_blank">david.ponzone@ipeva.fr</a></span></font></font></div>
<div><font face="'Helvetica Neue'"><font size="3"><span style="font-size:13px">tel: 01 74 03 18 97</span></font></font></div><div><font face="'Helvetica Neue'"><font size="3"><span style="font-size:13px">gsm: 06 66 98 76 34</span></font></font></div>
<div><font face="'Helvetica Neue'"><br></font></div><div><font color="#1C00FF" face="'Helvetica Neue'">Service Client<span> </span></font><font face="'Helvetica Neue'"><font color="#FF0000">IP</font></font><font color="#1C00FF" face="'Helvetica Neue'">eva</font></div>
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<div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;color:rgb(0, 34, 243)"><span style="text-decoration:underline"><br></span></div><div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;color:rgb(0, 34, 243)">
<span><div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;text-align:justify;color:rgb(192, 192, 192)"><i>Ce message et toutes les pièces jointes sont confidentiels et établis à l'intention exclusive de ses destinataires. Toute utilisation ou diffusion non autorisée est interdite. Tout message électronique est susceptible d'altération. </i><b><i>IPeva</i></b><i> décline toute responsabilité au titre de ce message s'il a été altéré, déformé ou falsifié. Si vous n'êtes pas destinataire de ce message, merci de le détruire immédiatement et d'avertir l'expéditeur.</i></div>
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<br><div><div>Le 02/02/2011 à 19:25, Marc De Corny a écrit :</div><br><blockquote type="cite"><div><div></div><div class="h5"><div bgcolor="#FFFFFF"><span style="font-size:medium"><span>Hi all,</span></span><span style="font-size:medium"><br>
</span><span style="font-size:medium"><span>I am thinking of a way of testing the quality of a voice call. </span></span><span style="font-size:medium"><br></span><span style="font-size:medium"><span></span></span><span style="font-size:medium"><br>
</span><span style="font-size:medium"><span>Ideally i would like to create a call from FS with a loopback parameter that tells phone to answer the call automatically and loopback the RTP. This is a common functionality in most phoned (for example cisco)</span></span><span style="font-size:medium"><br>
</span><span style="font-size:medium"><span>The sent and received packets could be compared for jitter, latency and packet loss and a result extracted.</span></span><span style="font-size:medium"><br></span><span style="font-size:medium"><span></span></span><span style="font-size:medium"><br>
</span><span style="font-size:medium"><span>Does this already exist? I know there some specific tool that accomplish this bit they are expensive and awkward to use. Starting and retrieving the result from an api would be fantastic.</span></span><span style="font-size:medium"><br>
</span><div></div><div><span style="font-size:medium"><br></span></div><div><span style="font-size:medium">Any ideas are welcome.</span></div><div><span style="font-size:medium">Thanks</span></div><div><span style="font-size:medium">Marc</span></div>
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