Speex dev - Mar 2005 - Optimized Codecs for Blackfin DSP

Hi,

JMV> ... none of these codecs can ever have open-source
JMV> implementations due to patent issues.

   We use now these codecs for x86 in "C" source code running under
Linux. They works very well. My problem is that we are not so familiar
with Blackfin DSP.
   Concerning of patent issues, you are not right. The patent is for
their using, not for the source code. Every one which use G.729, G.723
must pay taxes for each simultaneous channel and this tax is not
depend which source code you use - your own or open source or another.

   
   Best Regards,
   Miroslav Nachev

JMV> Hi,
>> Thank you. I will try it. Do you know some G.72x, GSM, and iLBC
>> optimized for Blackfin ? I mean open source.
JMV> Outside of GSM full-rate (13 kbps, poor quality), none of these codecs
JMV> can ever have open-source implementations due to patent issues. In the
JMV> case of iLBC, you can have a free (not open-source) license if you
JMV> register, but it's only for the floating-point version AFAIK.

JMV> 	Jean-Marc

>    Concerning of patent issues, you are not right. The patent is for
> their using, not for the source code. Every one which use G.729, G.723
> must pay taxes for each simultaneous channel and this tax is not
> depend which source code you use - your own or open source or another.
Have you recently looked up the definition of open-source? The minimum
requirement is that you're allowed to freely use modify and redistribute
the software. With that in mind, G.729 can never be open-source until
all patents expire. In the best case you could have source available for
free, but that's very far from open-source.

	Jean-Marc

-- 
Jean-Marc Valin <Jean-Marc.Valin@USherbrooke.ca>
Universit? de Sherbrooke

Skipped content of type multipart/alternative-------------- next part
--------------
A non-text attachment was scrubbed...
Name: john.villar.vcf
Type: text/x-vcard
Size: 396 bytes
Desc: not available
Url :
http://lists.xiph.org/pipermail/speex-dev/attachments/20050324/19bbf621/john.villar.vcf