<div dir="ltr">Thanks guys!</div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Oct 7, 2015 at 5:58 AM, Steven Ayre <span dir="ltr"><<a href="mailto:steveayre@gmail.com" target="_blank">steveayre@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><a href="http://tools.ietf.org/html/rfc3551" target="_blank">http://tools.ietf.org/html/rfc3551</a><div><pre style="font-size:13.3333px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)"> Even though the actual sampling rate for G.722 audio is 16,000 Hz,
the RTP clock rate for the G722 payload format is 8,000 Hz because
that value was erroneously assigned in <a href="http://tools.ietf.org/html/rfc1890" target="_blank">RFC 1890</a> and must remain
unchanged for backward compatibility. The octet rate or sample-pair
rate is 8,000 Hz.</pre></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On 7 October 2015 at 00:01, Michael Jerris <span dir="ltr"><<a href="mailto:mike@jerris.com" target="_blank">mike@jerris.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">G722/8000 is actually 16k not 8, an accident of history...<div><div><span></span><br><br>On Tuesday, October 6, 2015, Oleg Stolyar <<a href="mailto:olegstolyar@gmail.com" target="_blank">olegstolyar@gmail.com</a>> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr">Yeah but Chrome seems to only be offering G722 at 8000<div><div style="color:rgb(0,0,0);font-size:12.8px">a=rtpmap:9 G722/8000</div></div><div style="color:rgb(0,0,0);font-size:12.8px"><br></div><div>Am I reading this correctly?</div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>On Tue, Oct 6, 2015 at 3:32 PM, Anthony Minessale <span dir="ltr"><<a>anthony.minessale@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr">G722 is actually 16khz which can pass for hd<div>isac will do higher sample rates as well like 16 and 32 but it will probably also be cpu intensive.</div><div><br></div></div></div></div><div><div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>On Tue, Oct 6, 2015 at 5:17 PM, Giovanni Maruzzelli <span dir="ltr"><<a>gmaruzz@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><p dir="ltr">With browsers/webrtc I believe your choice is only between opus and g711<br></p>
<p dir="ltr">sent from my mobile,<br>
Giovanni Maruzzelli<br>
cell: +39 347 266 56 18</p></div></div><div><div>
<div class="gmail_quote"><div><div>On Oct 7, 2015 12:04 AM, "Oleg Stolyar" <<a>olegstolyar@gmail.com</a>> wrote:<br type="attribution"></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr">My endpoint is Chrome/WebRTC. Here is what the current version sends in the the INVITE. <div><br></div><div>Doesn't look like G722/16000 is there. How is ISAC in terms of CPU consumption?</div><div><br><div><div>a=rtpmap:111 opus/48000/2</div><div>a=fmtp:111 minptime=10; useinbandfec=1</div><div>a=rtpmap:103 ISAC/16000</div><div>a=rtpmap:104 ISAC/32000</div><div>a=rtpmap:9 G722/8000</div><div>a=rtpmap:0 PCMU/8000</div><div>a=rtpmap:8 PCMA/8000</div><div>a=rtpmap:106 CN/32000</div><div>a=rtpmap:105 CN/16000</div><div>a=rtpmap:13 CN/8000</div><div>a=rtpmap:126 telephone-event/8000</div></div><div><br></div></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>On Tue, Oct 6, 2015 at 1:49 PM, Stanislav Sinyagin <span dir="ltr"><<a>ssinyagin@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr"><div>If your endpoint supports it, G722@16000h gives a very decent voice quality. SILK also supports 16KHz.<br><br></div>here's some information related to codec complexity:<br><a href="https://txlab.wordpress.com/2015/04/10/testing-freeswitch-performance-on-scaleway-c1/" target="_blank">https://txlab.wordpress.com/2015/04/10/testing-freeswitch-performance-on-scaleway-c1/</a><br><br><br></div></div></div><div><div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>On Tue, Oct 6, 2015 at 10:40 PM, Oleg Stolyar <span dir="ltr"><<a>olegstolyar@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr">Thanks guys!<div><br></div><div>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.</div><div><br></div><div>Is there some codec/setting that will let me have HD voice for less CPU and perhaps more bandwidth?</div><div><br></div><div>It's not a must - I can scale up if needed, just wondering.</div></div></div></div><div><div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>On Tue, Oct 6, 2015 at 1:35 PM, Anthony Minessale <span dir="ltr"><<a>anthony.minessale@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">typo: <span style="font-size:12.8px">opus@8000h@20i</span></div><div class="gmail_extra"><div><div><div><div><br><div class="gmail_quote">On Tue, Oct 6, 2015 at 3:33 PM, Stanislav Sinyagin <span dir="ltr"><<a>ssinyagin@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">OPUS is an expensive codec, so any conversion between OPUS and<br>
uncompressed audio is CPU-consuming. I don;t think that resampling<br>
would play much of a role in CPU consumption.<br>
<div><div><br>
On Tue, Oct 6, 2015 at 10:29 PM, Oleg Stolyar <<a>olegstolyar@gmail.com</a>> wrote:<br>
> Hi guys,<br>
><br>
> I have a bunch of conferences on my FS. Users are either G.711/8000 or<br>
> G.722/8000. Conference sample rate is set to 8000.<br>
><br>
> When I switched some users to OPUS instead, the CPU consumption jumped 3-4<br>
> times even though the conference rate is still 8000. Is this expected?<br>
><br>
> I was hoping to be able to save some CPU by setting the conference sample<br>
> rate to auto (so it only used high-quality sampling for users that can<br>
> support it) but it seems it won't work. Any ideas?<br>
><br>
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