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Mumble uses Opus by default. You can definitely tell the audio sounds much better than competitors although mumble is more fussy about mic and background noise
by denimnerd42 6y ago
Mumble uses Opus by default. You can definitely tell the audio sounds much better than competitors although mumble is more fussy about mic and background noise as it does less processing than Skype for example.
Opus was originally intended to be a general purpose codec that maintained fidelity at even low bitrates which makes it suitable for telephony as it's also low latency. On the other hand it also sounds good at higher bit rates and I use it as my codec for my music when I convert them from flac for mobile devices.
- DiabloD3 6y agoDiscord and TeamSpeak also use Opus, and Skype transitioned to Opus near the end. Opus became the de facto codec for phone applications over the past decade.
- vel0city 6y agoOpus is the de facto codec for phone applications, other than you know, the publicly switched telephone network which is still mostly stuck on G.711 and only finally rolling out "HD Voice" G.722.
- centimeter 6y agoIf the device manufacturers could get their shit together and come up with some cross-manufacturer federated standard, we could easily dump the public telephony network once and for all. I’ve never been anywhere (rural or urban) where public telephone was better quality than some kind of VoIP. Even out in the boonies, data is usually more reliable than voice (at least with google fi).
- deleted 6y ago[deleted]
- vel0city 6y agoThe craziest thing is its not even really the device manufacturers, its usually the networks themselves. I've had SIP phones capable of good quality codecs for a long time but getting a carrier to actually support them and have a handshake actually complete with those is nearly impossible. My handshakes out always signal I'm Opus capable (along with a lot of other codecs) but almost every call in and out of my phone system is G.711. Calls internally sound wonderful though :)
- ksec 6y agoI dont know why but I never had much good experience with VoIP on the street. VoLTE with EVS [1] has been superb. [1] I think they are called HD Voice+ in some market.
- walrus01 6y agoIf you have a G.722 capable voip desk phone or softphone on your own asterisk system, where G.722 calls work between any two extensions on your system, and you are making calls into the regular PSTN... It is almost certainly ending up as G.711 anyways if you're calling another carrier. Particularly if you are using a SIP trunking service to reach any international destinations outside of the US50 states and Canada, it's going to be regular G.711 alaw or ulaw.
- gsich 6y agoG722 was also available on some ISDN phones in the 80ies.
- spullara 6y agoHighly recommend Nvidia's Broadcast to filter out mic noise if you can run it.
- sneak 6y agoOpus and Mumble are free software. Nvidia's processing stuff is not.
- spullara 6y agoI mean it is free if you have the card anyway, but sure.
- sneak 6y agoI didn't mean free as in "costs $0". The software comes with a restrictive, proprietary license, and no source code is provided.
- spullara 6y agoI guess everyone has the choice to use the best one or the free one but rarely at the same time.
- kingosticks 6y agoExcept in the case of Opus, by the sounds of these comments here.
- namibj 6y agoI'd like to run hardware-accelerated noise cancelling of RNNNoise-quality. For me, Mumble has a serious background CPU usage problem as soon as I turn that noise cancelling on, even if I'm client-side muted. I can only offer an i915 (Broadwell) target for said offloading, though.
- pritambaral 6y agoMumble has Xiph's RNNoise — which is Free and Open Source — built-in, thank you very much.
- seba_dos1 6y agoJamulus - an app for playing live music together online with minimal latency - also uses Opus.
- shams93 6y agoIt works well for game music with standard audio tags. The files can be much smaller than mp3 with higher quality.
- bawolff 6y agoOpus is also often just used generally. Youtube uses opus for the audio in videos
- StavrosK 6y ago> Opus was originally intended to be a general purpose codec Well, Opus was originally intended to be two codecs, which got merged into the beauty that is Opus now.
- k_sze 6y agoYep. Opus evolved from merging SILK and CELT. It’s like magic. Unfortunately, adoption in the digital audiophile hardware world seems very low. E.g. none of the flagship digital audio players from FiiO, Shanling, Cowon, Astell&Kern has built-in support for Opus, even though the codec is completely royalty-free.
- walrus01 6y agoSignal also uses opus by default, and I have found that audio quality on Signal voice calls is uniformly excellent, unless one person's end is experiencing very high packet loss (which would significantly hurt any VoIP application)