G722 is actually 16khz which can pass for hd
isac will do higher sample rates as well like 16 and 32 but it will probably also be cpu intensive.


On Tue, Oct 6, 2015 at 5:17 PM, Giovanni Maruzzelli <gmaruzz@gmail.com> wrote:

With browsers/webrtc I believe your choice is only between opus and g711

sent from my mobile,
Giovanni Maruzzelli
cell: +39 347 266 56 18

On Oct 7, 2015 12:04 AM, "Oleg Stolyar" <olegstolyar@gmail.com> wrote:
My endpoint is Chrome/WebRTC.  Here is what the current version sends in the the INVITE. 

Doesn't look like G722/16000 is there.  How is ISAC in terms of CPU consumption?

a=rtpmap:111 opus/48000/2
a=fmtp:111 minptime=10; useinbandfec=1
a=rtpmap:103 ISAC/16000
a=rtpmap:104 ISAC/32000
a=rtpmap:9 G722/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:106 CN/32000
a=rtpmap:105 CN/16000
a=rtpmap:13 CN/8000
a=rtpmap:126 telephone-event/8000


On Tue, Oct 6, 2015 at 1:49 PM, Stanislav Sinyagin <ssinyagin@gmail.com> wrote:
If your endpoint supports it, G722@16000h gives a very decent voice quality. SILK also supports 16KHz.

here's some information related to codec complexity:
https://txlab.wordpress.com/2015/04/10/testing-freeswitch-performance-on-scaleway-c1/



On Tue, Oct 6, 2015 at 10:40 PM, Oleg Stolyar <olegstolyar@gmail.com> wrote:
Thanks guys!

Anthony, using your suggestion means that I won't have HD voice, correct?  HD voice is the primary reason I am considering OPUS instead of G.722.

Is there some codec/setting that will let me have HD voice for less CPU and perhaps more bandwidth?

It's not a must - I can scale up if needed, just wondering.

On Tue, Oct 6, 2015 at 1:35 PM, Anthony Minessale <anthony.minessale@gmail.com> wrote:
typo: opus@8000h@20i

On Tue, Oct 6, 2015 at 3:33 PM, Stanislav Sinyagin <ssinyagin@gmail.com> wrote:
OPUS is an expensive codec, so any conversion between OPUS and
uncompressed audio is CPU-consuming. I don;t think that resampling
would play much of a role in CPU consumption.

On Tue, Oct 6, 2015 at 10:29 PM, Oleg Stolyar <olegstolyar@gmail.com> wrote:
> Hi guys,
>
> I have a bunch of conferences on my FS.  Users are either G.711/8000 or
> G.722/8000.  Conference sample rate is set to 8000.
>
> When I switched some users to OPUS instead, the CPU consumption jumped 3-4
> times even though the conference rate is still 8000.  Is this expected?
>
> I was hoping to be able to save some CPU by setting the conference sample
> rate to auto (so it only used high-quality sampling for users that can
> support it)  but it seems it won't work.  Any ideas?
>
> _________________________________________________________________________
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