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Discussion Groups | Speech Coding | MELP Algorithm IP
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
MELP Algorithm IP - plsymonds - Mar 8 7:41:00 2005
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Hi All, I am busy looking into the MELP algorithm and as Texas Instruments has intellectual property rights on the algorithm I am interested in finding out more about the legal issues (such as copyright, royalties etc. etc.) pertaining to the use of the algorithm. I know that a lot of vocoders are copyright protected, with the maths being patented in some cases, so one usually cannot just go ahead with an implementation. My question therefore is : "Would anyone have any ideas of where I may get the requisite legal information, or alternatively who I could get in touch with at TI, with regards to licensing issues?". Please note that I have searched the TI website, but to no avail. Kind regards Paul |
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Re: MELP Algorithm IP - Phil Frisbie, Jr. - Mar 9 13:40:00 2005
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plsymonds wrote: > > > Hi All, > > I am busy looking into the MELP algorithm and as Texas Instruments > has intellectual property rights on the algorithm I am > interested in finding out more about the legal issues (such as > copyright, royalties etc. etc.) pertaining to the use of the > algorithm. I know that a lot of vocoders are copyright protected, > with the maths being patented in some cases, so one usually > cannot just go ahead with an implementation. > > My question therefore is : "Would anyone have any ideas of where I > may get the requisite legal information, or alternatively > who I could get in touch with at TI, with regards to licensing > issues?". I tracked this down a few years ago.... The MELP patents were sold to ASPI, which was purchased by Polycom. You must contact them to get licensing information. http://www.aspi.com -- Phil Frisbie, Jr. Hawk Software http://www.hawksoft.com |
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Re: MELP Algorithm IP - Jeff Brower - Mar 10 14:07:00 2005
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Phil- > I tracked this down a few years ago.... > > The MELP patents were sold to ASPI, which was purchased by Polycom. You must > contact them to get licensing information. http://www.aspi.com This is incorrect; Polycom has nothing to do with MELP. Read this carefully: http://www.aspi.com/tech/ The correct info is as follows: 1) There is no IPR for MELP/MELPe when used in mil/gov applications. 2) For commercial apps: -Texas Instruments owns IPR for MELP 2400 bps; they will waive fees if a TI chip is used -Microsoft owns IPR for MELPe 1200 bps (acquired by purchasing SignalCom in 2001) -there will be IPR for MELPe 600 bps, probably Harris, although could be Thales Group. The 600 bps selection process is ongoing -if the NPP (noise pre-processing) algorithm specified in MELPe STANAG 4591 is used, then Lucent is the IPR holder Anyone who wants individual contact persons for the above companies, please explain to me why offline, and I will ask those people for permission to give out there info to you. -Jeff |
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Re: MELP Algorithm IP - Phil Frisbie, Jr. - Mar 10 18:53:00 2005
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Jeff Brower wrote: > Phil- >>I tracked this down a few years ago.... >> >>The MELP patents were sold to ASPI, which was purchased by Polycom. You must >>contact them to get licensing information. http://www.aspi.com > > This is incorrect; Polycom has nothing to do with MELP. Read this carefully: > > http://www.aspi.com/tech/ Yes, you are correct that the codecs were not part of the Polycom purchase. > The correct info is as follows: > > 1) There is no IPR for MELP/MELPe when used in mil/gov applications. > > 2) For commercial apps: > > -Texas Instruments owns IPR for MELP 2400 bps; they > will waive fees if a TI chip is used That is not what TI told me by telephone in December 2001. They said that all MELP IP had been sold to ASPI. Craig H. Richardson at ASPI confirmed their IP rights by email in January 2002, so who should we believe? -- Phil Frisbie, Jr. Hawk Software http://www.hawksoft.com |
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