<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rtc="http://microsoft.com/officenet/conferencing" xmlns:D="DAV:" xmlns:Repl="http://schemas.microsoft.com/repl/" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ppda="http://www.passport.com/NameSpace.xsd" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi Xiph,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We are porting the CELT audio codec onto our Blackfin DSP for subsequent software distribution to our customers and would like to ensure we have covered the licensing appropriately. In reviewing the Opus codec info, it looks like there are multiple contributors (Xiph, Qualcomm, Broadcom, Skype, Microsoft, Huawei), however Xiph seems to be the main (and possibly only) IP holder in CELT. Could you please confirm if there are other parties that have a licensing or IP interest in CELT. If it is just Xiph, then I believe that as long as we leave the following notice (that came with version 0.9.8 of software we used) associated with our port of CELT, we should be fine – please confirm.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++<o:p></o:p></p><p class=MsoNormal>Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic,<o:p></o:p></p><p class=MsoNormal> Jean-Marc Valin, Timothy B. Terriberry,<o:p></o:p></p><p class=MsoNormal> CSIRO, Gregory Maxwell, Mark Borgerding, <o:p></o:p></p><p class=MsoNormal> Erik de Castro Lopo<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Redistribution and use in source and binary forms, with or without<o:p></o:p></p><p class=MsoNormal>modification, are permitted provided that the following conditions<o:p></o:p></p><p class=MsoNormal>are met:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>- Redistributions of source code must retain the above copyright<o:p></o:p></p><p class=MsoNormal>notice, this list of conditions and the following disclaimer.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>- Redistributions in binary form must reproduce the above copyright<o:p></o:p></p><p class=MsoNormal>notice, this list of conditions and the following disclaimer in the<o:p></o:p></p><p class=MsoNormal>documentation and/or other materials provided with the distribution.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS<o:p></o:p></p><p class=MsoNormal>``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT<o:p></o:p></p><p class=MsoNormal>LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR<o:p></o:p></p><p class=MsoNormal>A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR<o:p></o:p></p><p class=MsoNormal>CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,<o:p></o:p></p><p class=MsoNormal>EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,<o:p></o:p></p><p class=MsoNormal>PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR<o:p></o:p></p><p class=MsoNormal>PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF<o:p></o:p></p><p class=MsoNormal>LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING<o:p></o:p></p><p class=MsoNormal>NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS<o:p></o:p></p><p class=MsoNormal>SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Best regards, Robert Slaviero (Global DSP Licensing Director).<br><br>Robert Slaviero, Managing Director, Analog Devices Australia Pty Ltd.<br>Unit 3, 97 Lewis Road, Wantirna, Victoria, 3152, AUSTRALIA<br>Direct: +61 3 9881 9900, Main: +61 3 9881 9999, Fax: +61 3 9881 9988<br>Email: <a href="mailto:robert.slaviero@analog.com"><span style='color:blue'>robert.slaviero@analog.com</span></a>, Web: <a href="http://www.analog.com/au"><span style='color:blue'>www.analog.com/au</span></a><br><br>Embedded DSP software for multimedia & telecommunications.<br><br>This communication is proprietary and confidential.</span><span lang=EN-US style='font-size:12.0pt;font-family:"Arial","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>