Subject: Re: [AUDITORY] PESQ From: Stefan Strahl <stef@xxxxxxxx> Date: Wed, 24 Jul 2013 11:42:01 +0200 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>--001a11c31fd4ba3a2804e23eb876 Content-Type: text/plain; charset=ISO-8859-1 Hello Omid :) That an algorithm is published does not necessarily mean that it can be used freely, it might have been patented/protected before its publication. A famous example is the compression used in the GIF image format http://en.wikipedia.org/wiki/GIF#Unisys%5Fand%5FLZW%5Fpatent%5Fenforcement But I believe that research is exempted from any patent rights (see for example http://www.ipo.gov.uk/consult-patresearch.pdf). As Stefan did perform research with PESQ, to my understanding, he is only required to pay a fee if he used a commercial implementation like Opticom's C-code. @xxxxxxxx: is the 7000USD quote for an academic licence of the OEM implementation or did they say that you also need to acquire a patent licence to publish PESQ scores in scientific papers? To my understanding, using an open source or "self-made" implementation of a patented algorithm for research should be free of any copyright and patent licence fees. :) stefan On Wed, Jul 24, 2013 at 6:44 AM, Sadjadi, Omid <sadjadi@xxxxxxxx> 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 > on behalf of Stefan Bleeck [bleeck@xxxxxxxx > Sent: Tuesday, July 23, 2013 9:43 AM > To: AUDITORY@xxxxxxxx > 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 Tel.: 02380 596682 > > --001a11c31fd4ba3a2804e23eb876 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">Hello Omid :)<div><br></div><div>That an algorithm is publ= ished does not necessarily mean that it can be used freely, it might have b= een patented/protected before its publication. A famous example is the comp= ression used in the GIF image format=A0<a href=3D"http://en.wikipedia.org/w= iki/GIF#Unisys%5Fand%5FLZW%5Fpatent%5Fenforcement">http://en.wikipedia.org/= wiki/GIF#Unisys%5Fand%5FLZW%5Fpatent%5Fenforcement</a></div> <div><br></div><div>But I believe that research is exempted from any patent= rights (see for example=A0<a href=3D"http://www.ipo.gov.uk/consult-patrese= arch.pdf">http://www.ipo.gov.uk/consult-patresearch.pdf</a>). As Stefan did= perform research with PESQ, to my understanding, he is only required to pa= y a fee if he used a commercial implementation like Opticom's C-code. @xxxxxxxx= Stefan: is the 7000USD quote for an academic licence of the OEM implementat= ion or did they say that you also need to acquire a patent licence to publi= sh PESQ scores in scientific papers? To my understanding, using an open sou= rce or "self-made" implementation of a patented algorithm for res= earch should be free of any copyright and patent licence fees.</div> <div><br></div><div>:) stefan</div><div><br></div></div><div class=3D"gmail= _extra"><br><br><div class=3D"gmail_quote">On Wed, Jul 24, 2013 at 6:44 AM,= Sadjadi, Omid <span dir=3D"ltr"><<a href=3D"mailto:sadjadi@xxxxxxxx= " target=3D"_blank">sadjadi@xxxxxxxx</a>></span> wrote:<br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex">Can you point us to the document that has th= is 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, "Perceptual e= valuation of speech quality (PESQ)-a new method for speech quality assessme= nt of telephone networks and codecs," 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"mailto:AUDITOR= Y@xxxxxxxx">AUDITORY@xxxxxxxx</a>] on behalf of Stefan Bleeck= [<a href=3D"mailto:bleeck@xxxxxxxx">bleeck@xxxxxxxx</a>]<br> Sent: Tuesday, July 23, 2013 9:43 AM<br> To: <a href=3D"mailto:AUDITORY@xxxxxxxx">AUDITORY@xxxxxxxx</a= ><br> Subject: [AUDITORY] PESQ<br> <div class=3D"HOEnZb"><div class=3D"h5"><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 =A0in Loizou'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't know this and did a lot of<br> work with it that we now can'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"mailto:bleeck@xxxxxxxx">bleeck@xxxxxxxx</a> Tel.: 02380 596682= <br> <br> </div></div></blockquote></div><br></div> --001a11c31fd4ba3a2804e23eb876--