[Freeswitch-users] Conference vs codec sample rate and CPU

[Stanislav Sinyagin]

If your endpoint supports it, G722 at 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 at 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 at gmail.com> wrote:
>
>> typo: opus at 8000h@20i
>>
>> On Tue, Oct 6, 2015 at 3:33 PM, Stanislav Sinyagin <ssinyagin at 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 at 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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>>
>>
>>
>> --
>> Anthony Minessale II       ♬ @anthmfs  ♬ @FreeSWITCH  ♬
>>
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>
>
> _________________________________________________________________________
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>
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