inline On 8/10/07, Gordon Henderson <[EMAIL PROTECTED]> wrote: > > On Fri, 10 Aug 2007, Cesc Santa wrote: > > > > > I can use them ... but cannot do translation ... only "pass-through" ... > it > > complains that > > there is no function to convert to internal codec (pcm?) > > > > G726 should also be compiled in as standard - it's supplied with > asterisk. > > > > no license to use it needed? > > None at all.
ok ... i guess i will have to try harder ;) > These may not be "free" enough for your Linux distribution, so that might > >> be why you don't have them if you're running a binary installation. Eg. > >> iLbc isn't "free" enough for standard Debian. > > > > well, i use debian, but not the asterisk binary distro ... i compiled > myself > > from 1.2.18 sources > > OK. This is what I do too! > > I have Debian Sarge on my development box. > > So it's strange you don't have iLBC and speex. There is a debian package > for speex: > > On my development box: > > bob:~# dpkg -l | grep speex > ii libspeex-dev 1.1.6-2 The Speex Speech Codec > ii libspeex1 1.1.6-2 The Speex Speech Codec > ii speex 1.1.6-2 The Speex Speech Codec this is probably one thing i am missing ... i will check but I have no iLBC packages - they appear to be in the asterisk source... > > bob:~# asterisk -rx 'show translation' > Translation times between formats (in milliseconds) > Source Format (Rows) Destination Format(Columns) > > g723 gsm ulaw alaw g726 adpcm slin lpc10 g729 speex ilbc > g723 - - - - - - - - - - - > gsm - - 2 2 3 2 1 7 - 31 19 > ulaw - 4 - 1 3 2 1 7 - 31 19 > alaw - 4 1 - 3 2 1 7 - 31 19 > g726 - 4 2 2 - 2 1 7 - 31 19 > adpcm - 4 2 2 3 - 1 7 - 31 19 > slin - 3 1 1 2 1 - 6 - 30 18 > lpc10 - 5 3 3 4 3 2 - - 32 20 > g729 - - - - - - - - - - - > speex - 5 3 3 4 3 2 8 - - 20 > ilbc - 6 4 4 5 4 3 9 - 33 - > > so I get everything apart from g723 and g729. I didn't do anything special > to the makefile, etc. (other than set the i586 flag as my target box needs > it) and this is definitely what I would expect to have ... knowing someone has it ... i'll get to work :) > G723 and G729 are patent encumbered and so you need licenses to run the > >> software. You can get G729 licenses from Digium, but I don't know about > >> G723... > > > > ok ... i will contact digium for g729 license ... anyone knows about > g723? > > Do you actually need g729? I'd not spend the money on it unless you really > needed it. > > I've not heard of anyone using or offering g723... > > And I have to say; you're not missing much by not having iLBC or speex. > The CPU overhead is significant and the voice quality is somewhat > "dubious" :) Unless you absolutely really desperately need to compress the > data stream to squeeze out every ounch of bandwidth, then I'd really not > use them. > > If you need to compress, start with G726, then move to GSM, and then if > you need better audio quality, buy g729 licenses. > > Gordon I agree with you ... actually, I am interested in G729 (and I am definitely getting a few licenses). G723 I also got a customer who would like to see it working in my product ... so I'll check it out. As for Speex and iLBC, it was some collateral "damage" ... I was looking at the transcoding and knowing these codecs were/are free, I found it strange that I could not translate them ... I'll fix that. Even it is just for the fun. Many thanks! Cesc
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