Re: [AUDITORY] PESQ (Dan Ellis )


Subject: Re: [AUDITORY] PESQ
From:    Dan Ellis  <dpwe@xxxxxxxx>
Date:    Wed, 24 Jul 2013 07:25:21 -0400

--bcaec547c8a743b1a904e2402a2b Content-Type: text/plain; charset=UTF-8 This is shocking news to me, too, but just because the description is published doesn't mean you can use it for free. That's what patents are for - getting people to reveal their trade secrets in return for a limited-term legal monopoly. DAn. On Wednesday, July 24, 2013, Sadjadi, Omid wrote: > Can you point us to the document that has this information? I highly doubt > this. > > The paper describing PESQ is publicly available (to IEEE members), which > means everyone can implement and use this metric: > > A.W. Rix, J.G., Beerends, M.P. Hollier and A.P. Hekstra, "Perceptual > evaluation of speech quality (PESQ)-a new method for speech quality > assessment of telephone networks and codecs," in Proc. IEEE ICASSP, Salt > Lake City, UT, May 2001, pp.749-752. > > Omid > ________________________________________ > From: AUDITORY - Research in Auditory Perception [AUDITORY@xxxxxxxx<javascript:;>] > on behalf of Stefan Bleeck [bleeck@xxxxxxxx <javascript:;>] > Sent: Tuesday, July 23, 2013 9:43 AM > To: AUDITORY@xxxxxxxx <javascript:;> > Subject: [AUDITORY] PESQ > > I just found out that the _academic_ use of PESQ (perceptual > evaluation of speech quality, ITU recommendation P.862), that is > described with MATLAB source code in Loizou's Speech Enhancement > book, requires a license that costs around $7000 per year. I write > this as a warning for others against using it (unless you happen to > have the spare cash), because we didn't know this and did a lot of > work with it that we now can't publish. > > > -- > Dr. Stefan Bleeck > Hearing and Balance Centre > Institute of Sound and Vibration Research > Faculty of Engineering and the Environment > University of Southampton, SO17 1BJ, UK > Room 4093, Tizard building (13) > bleeck@xxxxxxxx <javascript:;> Tel.: 02380 596682 > --bcaec547c8a743b1a904e2402a2b Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable This is shocking news to me, too, but just because the description is publi= shed doesn&#39;t mean you can use it for free. That&#39;s what patents are = for - getting people to reveal their trade secrets in return for a limited-= term legal monopoly.=C2=A0<div> <br></div><div>=C2=A0 DAn.=C2=A0<span></span><br><br>On Wednesday, July 24,= 2013, Sadjadi, Omid wrote:<br><blockquote class=3D"gmail_quote" style=3D"= margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Can you poin= t us to the document that has this information? I highly doubt this.<br> <br> The paper describing PESQ is publicly available (to IEEE members), which me= ans everyone can implement and use this metric:<br> <br> A.W. Rix, J.G., Beerends, M.P. Hollier and A.P. Hekstra, &quot;Perceptual e= valuation of speech quality (PESQ)-a new method for speech quality assessme= nt of telephone networks and codecs,&quot; in Proc. IEEE ICASSP, Salt Lake = City, UT, May 2001, pp.749-752.<br> <br> Omid<br> ________________________________________<br> From: AUDITORY - Research in Auditory Perception [<a href=3D"javascript:;" = onclick=3D"_e(event, &#39;cvml&#39;, &#39;AUDITORY@xxxxxxxx&#39;)">A= UDITORY@xxxxxxxx</a>] on behalf of Stefan Bleeck [<a href=3D"javascr= ipt:;" onclick=3D"_e(event, &#39;cvml&#39;, &#39;bleeck@xxxxxxxx&#39;)">bl= eeck@xxxxxxxx</a>]<br> Sent: Tuesday, July 23, 2013 9:43 AM<br> To: <a href=3D"javascript:;" onclick=3D"_e(event, &#39;cvml&#39;, &#39;AUDI= TORY@xxxxxxxx&#39;)">AUDITORY@xxxxxxxx</a><br> Subject: [AUDITORY] PESQ<br> <br> I just found out that the _academic_ use of PESQ (perceptual<br> evaluation of speech quality, ITU recommendation P.862), that is<br> described with MATLAB source code =C2=A0in Loizou&#39;s Speech Enhancement<= br> book, requires a license that costs around $7000 per year. I write<br> this as a warning for others against using it (unless you happen to<br> have the spare cash), because we didn&#39;t know this and did a lot of<br> work with it that we now can&#39;t publish.<br> <br> <br> --<br> Dr. Stefan Bleeck<br> Hearing and Balance Centre<br> Institute of Sound and Vibration Research<br> Faculty of Engineering and the Environment<br> University of Southampton, SO17 1BJ, UK<br> Room 4093, Tizard building (13)<br> <a href=3D"javascript:;" onclick=3D"_e(event, &#39;cvml&#39;, &#39;bleeck@xxxxxxxx= mail.com&#39;)">bleeck@xxxxxxxx</a>=C2=A0Tel.: 02380 596682<br> </blockquote></div> --bcaec547c8a743b1a904e2402a2b--


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DAn Ellis <dpwe@ee.columbia.edu>
Electrical Engineering Dept., Columbia University